{"title":"Fire Dampers","description":"\u003cstyle\u003e\n\/* Neutralise the theme's height-based clamp on the collection description and hide\n   its toggle. Visibility is controlled by the \u003cdetails\u003e below instead, mirroring the\n   PDP's pdp-summary-more pattern: the author decides where the summary ends, so there\n   is no measuring, no fade, and nothing gets cut mid-sentence at any viewport. *\/\n.collection__description.expandable-content{max-height:none!important;padding-bottom:0!important}\n.collection__description .expandable-content__toggle{display:none!important}\n.collection__description,.collection__description .rte{overflow:visible!important}\n\n#efans-subnav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:44px 0 4px;padding:4px 0 8px;position:relative}\n#efans-subnav \u003e a{flex:0 0 auto;white-space:nowrap;display:inline-flex;align-items:center;padding:12px 14px;border:1px solid #d6d6d6;border-radius:999px;background:#fff;color:#222;font-size:14px;font-weight:500;line-height:1.3;text-decoration:none;cursor:pointer;transition:border-color .15s,background-color .15s,color .15s}\n#efans-subnav \u003e a:hover{border-color:#000;color:#000}\n#efans-subnav \u003e a.efx-active,#efans-subnav \u003e a.efx-active:hover{background:#000;border-color:#000;color:#fff}\n#efans-subnav \u003e a.efx-active::after{content:\"\\00d7\";margin-left:8px;font-size:16px;line-height:1}\n\n.efx-more{margin-top:28px}\n.efx-more \u003e summary{list-style:none;cursor:pointer;display:inline-block;color:var(--text-color);text-decoration:underline;text-decoration-style:dotted;text-underline-offset:3px}\n.efx-more \u003e summary::-webkit-details-marker{display:none}\n.efx-more \u003e summary:hover{color:var(--heading-color)}\n.efx-more .efx-more__open{display:none}\n.efx-more[open] \u003e summary .efx-more__closed{display:none}\n.efx-more[open] \u003e summary .efx-more__open{display:inline}\n.efx-more__content{margin-top:24px}\n.efx-more__content h2:first-child{margin-top:0}\n\u003c\/style\u003e\n\n\u003cp\u003eFire dampers prevent fire and smoke spreading through ventilation ductwork between fire compartments. Required by Building Regulations wherever a duct penetrates a fire-rated wall, floor, or compartment boundary. We stock BSB FD-C and Systemair PKI circular fire dampers, air valves with an integral fire damper and intumescent fire blocks for air transfer openings, with UK stock and next-day delivery. Use the size buttons below to filter the range, or email \u003ca href=\"mailto:hello@efans.co.uk\"\u003ehello@efans.co.uk\u003c\/a\u003e or call \u003ca href=\"tel:01613993825\"\u003e0161 399 3825\u003c\/a\u003e for sizing help and trade pricing.\u003c\/p\u003e\n\n\u003cdetails class=\"efx-more\"\u003e\n\u003csummary\u003e\u003cspan class=\"efx-more__closed\"\u003eRead more\u003c\/span\u003e\u003cspan class=\"efx-more__open\"\u003eRead less\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"efx-more__content\"\u003e\n\n\u003cp\u003eOur range covers circular in-duct fire dampers and intumescent fire protection for ductwork and air transfer openings: BSB FD-C circular single-blade fire dampers from 100mm to 315mm (externally resettable, ES-classified to BS EN 1366-2 with reduced smoke leakage, air control tested to BS EN 1751), Systemair PKI in-duct circular fire dampers from 100mm to 200mm (EIS to EN 1366-2, up to 120 minutes, 72°C thermal fuse), FläktWoods KSOF air valves with integral fire damper for MVHR and MEV terminals (CE-marked to EN 15650), and circular intumescent fire blocks from 100mm to 200mm and square intumescent fire blocks from 150mm to 600mm (tested up to 60 minutes in timber doors and up to 120 minutes in walls and ductwork).\u003c\/p\u003e\n\n\u003cp\u003eCertification and fire rating vary by product type, and each product page lists the standards, rating and datasheet for that item. We don't currently stock rectangular multi-blade fire dampers, but we can source them to order for project work. Trade pricing, UK stock and next-day delivery available. Email \u003ca href=\"mailto:hello@efans.co.uk\"\u003ehello@efans.co.uk\u003c\/a\u003e or call \u003ca href=\"tel:01613993825\"\u003e0161 399 3825\u003c\/a\u003e for a quote, sizing help or wholesale pricing.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhere are fire dampers required?\u003c\/h3\u003e\n\u003cp\u003eWherever ductwork passes through a fire compartment boundary, meaning fire-rated walls, floors, and partitions. Approved Document B of the Building Regulations requires that penetrations through fire-separating elements are protected to maintain the compartment's fire resistance. In practice, this covers ductwork in offices, schools, hospitals, care homes, hotels, and residential blocks of flats. If you're running a duct through any wall or floor that has a fire rating (typically 30, 60, 90, or 120 minutes), you need a fire damper at that penetration. The damper's fire rating must match or exceed the rating of the element it passes through.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's the difference between a fire damper and an intumescent fire block?\u003c\/h3\u003e\n\u003cp\u003eA mechanical fire damper (like the BSB FD-C or Systemair PKI) has a moving blade that closes when the thermal fuse releases, and it can be reset and tested after activation. They're used in active ventilation ductwork where airflow is continuous during normal operation. An intumescent fire block has no moving parts: it's a collar or sleeve containing intumescent material that expands in a fire, crushing and sealing the duct penetration. Intumescent blocks are typically used on passive ventilation openings (air transfer grilles between rooms), extract terminals, and smaller duct penetrations. They're simpler and cheaper but can't be reset, so once activated they're replaced. The two product types are tested and certified to different standards, so check the specification on the product page against what your Building Control officer or fire strategy requires.\u003c\/p\u003e\n\n\u003ch3\u003eHow often do fire dampers need testing?\u003c\/h3\u003e\n\u003cp\u003eBS 9999 recommends annual inspection and testing of all fire dampers. This involves a visual check of the damper and its access panel, followed by a drop test: releasing the blade to confirm it closes fully, then resetting it. Some insurers and local authorities require six-monthly testing in higher-risk buildings like hospitals and care homes. Every test must be recorded with the date, damper location, result, and the name of the person who carried out the inspection. If a damper fails its drop test, it must be repaired or replaced immediately, as a stuck-open fire damper is a serious fire safety breach.\u003c\/p\u003e\n\n\u003ch3\u003eDo I need an access panel for each fire damper?\u003c\/h3\u003e\n\u003cp\u003eYes. Building Regulations and BS 9999 both require that every fire damper is accessible for inspection and testing. In practice, this means fitting a duct access door or building in a ceiling access panel directly adjacent to each damper. A fire damper that can't be reached for its annual drop test is non-compliant. This is one of the most common issues found during fire risk assessments: dampers installed above fixed ceilings with no access. Plan the access at design stage, not as an afterthought. The access panel must be large enough to see the damper blade, operate the test release, and reset the mechanism.\u003c\/p\u003e\n\n\u003ch3\u003eWhat size fire damper do I need?\u003c\/h3\u003e\n\u003cp\u003eThe fire damper must match the duct size at the point of penetration. For circular ductwork, specify the damper by the duct's internal diameter. The BSB FD-C range covers 100mm to 315mm in eight sizes, and the Systemair PKI range covers 100mm, 125mm, 150mm and 200mm. For rectangular ductwork, multi-blade fire dampers are sized to match the duct cross-section. We don't stock these as standard but can source them to order, so send us the schedule. For passive air transfer openings not connected to ductwork, use intumescent fire blocks: circular blocks for round openings, square blocks for rectangular openings. Always match the fire rating of the damper to the fire rating of the wall or floor it's installed in, so a 60-minute wall needs at least a 60-minute damper.\u003c\/p\u003e\n\n\u003ch3\u003eCan I use intumescent fire blocks on MVHR systems?\u003c\/h3\u003e\n\u003cp\u003eYes, intumescent fire blocks are commonly used on the individual room supply and extract terminals of MVHR and MEV systems. The air valve with integral fire damper we stock combines a standard adjustable air valve with a fire damper in the back of the terminal. This means you get airflow control and fire protection in one unit, without needing a separate mechanical fire damper at every room terminal. They're particularly useful in residential blocks of flats where each flat's ventilation terminals penetrate the fire compartment between the flat and the communal riser or ceiling void. Confirm the required rating with your fire strategy or Building Control officer before specifying.\u003c\/p\u003e\n\n\u003ch3\u003eDo you supply fire dampers for commercial projects and trade accounts?\u003c\/h3\u003e\n\u003cp\u003eYes. eFans supplies M\u0026amp;E contractors, ventilation installers, fire protection specialists and facilities teams across the UK. Send us a drawing, damper schedule or brief and we'll check sizes against the duct layout, quote the matched dampers and access doors, source anything outside our stock range, and arrange next-day or scheduled delivery to site. Email \u003ca href=\"mailto:hello@efans.co.uk\"\u003ehello@efans.co.uk\u003c\/a\u003e or call \u003ca href=\"tel:01613993825\"\u003e0161 399 3825\u003c\/a\u003e for trade pricing on multi-damper orders.\u003c\/p\u003e\n\n\u003cp\u003eFor the full background on types, regulations and testing, read our \u003ca href=\"\/blogs\/help-advice\/fire-dampers-the-complete-uk-guide-to-types-regulations-testing\"\u003efire damper guide\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdiv id=\"efans-subnav\"\u003e\n\u003ca rel=\"nofollow\" data-tag=\"size-range_100-160mm\" href=\"\/collections\/fire-dampers\/size-range_100-160mm\"\u003e100–160mm\u003c\/a\u003e\n\u003ca rel=\"nofollow\" data-tag=\"size-range_200-250mm\" href=\"\/collections\/fire-dampers\/size-range_200-250mm\"\u003e200–250mm\u003c\/a\u003e\n\u003ca rel=\"nofollow\" data-tag=\"size-range_300-400mm\" href=\"\/collections\/fire-dampers\/size-range_300-400mm\"\u003e300–400mm\u003c\/a\u003e\n\u003ca rel=\"nofollow\" data-tag=\"size-range_450-600mm\" href=\"\/collections\/fire-dampers\/size-range_450-600mm\"\u003e450–600mm\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cscript\u003e\n(function(){var n=document.getElementById('efans-subnav');if(!n)return;var base='\/collections\/fire-dampers';\nvar p=location.pathname.replace(\/\\\/$\/,''),seg=p.indexOf(base+'\/')===0?decodeURIComponent(p.slice(base.length+1)):'';\nvar cur=seg?seg.split('+').filter(Boolean):[];\nfunction url(list){return list.length?base+'\/'+list.join('+'):base;}\nn.querySelectorAll('a[data-tag]').forEach(function(a){var t=a.getAttribute('data-tag'),g=t.split('_')[0],on=cur.indexOf(t)\u003e-1;\na.setAttribute('href',url(on?cur.filter(function(x){return x!==t;}):cur.filter(function(x){return x.split('_')[0]!==g;}).concat([t])));\nif(on){a.classList.add('efx-active');a.setAttribute('aria-pressed','true');a.title='Remove this filter';}});})();\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\"@type\":\"Question\",\"name\":\"Where are fire dampers required?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Wherever ductwork passes through a fire compartment boundary, meaning fire-rated walls, floors, and partitions. Approved Document B of the Building Regulations requires that penetrations through fire-separating elements are protected to maintain the compartment's fire resistance. In practice, this covers ductwork in offices, schools, hospitals, care homes, hotels, and residential blocks of flats. If you are running a duct through any wall or floor that has a fire rating, typically 30, 60, 90, or 120 minutes, you need a fire damper at that penetration.\"}},\n    {\"@type\":\"Question\",\"name\":\"What's the difference between a fire damper and an intumescent fire block?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A mechanical fire damper has a moving blade that closes when the thermal fuse releases, and it can be reset and tested after activation. They are used in active ventilation ductwork where airflow is continuous during normal operation. An intumescent fire block has no moving parts: it is a collar or sleeve containing intumescent material that expands in a fire, crushing and sealing the duct penetration. Intumescent blocks are typically used on passive ventilation openings, extract terminals, and smaller duct penetrations, and cannot be reset once activated.\"}},\n    {\"@type\":\"Question\",\"name\":\"How often do fire dampers need testing?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"BS 9999 recommends annual inspection and testing of all fire dampers. This involves a visual check of the damper and its access panel, followed by a drop test: releasing the blade to confirm it closes fully, then resetting it. Some insurers and local authorities require six-monthly testing in higher-risk buildings like hospitals and care homes. Every test must be recorded with the date, damper location, result, and the name of the person who carried out the inspection.\"}},\n    {\"@type\":\"Question\",\"name\":\"Do I need an access panel for each fire damper?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Building Regulations and BS 9999 both require that every fire damper is accessible for inspection and testing. In practice, this means fitting a duct access door or building in a ceiling access panel directly adjacent to each damper. A fire damper that cannot be reached for its annual drop test is non-compliant. Plan the access at design stage, not as an afterthought.\"}},\n    {\"@type\":\"Question\",\"name\":\"What size fire damper do I need?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The fire damper must match the duct size at the point of penetration. For circular ductwork, specify the damper by the duct's internal diameter. The BSB FD-C range covers 100mm to 315mm in eight sizes, and the Systemair PKI range covers 100mm, 125mm, 150mm and 200mm. For rectangular ductwork, multi-blade fire dampers are sized to match the duct cross-section. Always match the fire rating of the damper to the fire rating of the wall or floor it is installed in.\"}},\n    {\"@type\":\"Question\",\"name\":\"Can I use intumescent fire blocks on MVHR systems?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, intumescent fire blocks are commonly used on the individual room supply and extract terminals of MVHR and MEV systems. The air valve with integral fire damper combines a standard adjustable air valve with a fire damper in the back of the terminal, giving airflow control and fire protection in one unit. They are particularly useful in residential blocks of flats. Confirm the required rating with your fire strategy or Building Control officer before specifying.\"}},\n    {\"@type\":\"Question\",\"name\":\"Do you supply fire dampers for commercial projects and trade accounts?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. eFans supplies M\u0026E contractors, ventilation installers, fire protection specialists and facilities teams across the UK. Send a drawing, damper schedule or brief and we will check sizes against the duct layout, quote the matched dampers and access doors, source anything outside our stock range, and arrange next-day or scheduled delivery to site. Call 0161 399 3825 or email hello@efans.co.uk.\"}}\n  ]\n}\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"WebPage\",\n  \"url\": \"https:\/\/www.efans.co.uk\/collections\/fire-dampers\",\n  \"speakable\": {\n    \"@type\": \"SpeakableSpecification\",\n    \"cssSelector\": [\"h3\", \"h3 + p\"]\n  }\n}\n\u003c\/script\u003e\n","products":[{"product_id":"systemair-fire-damper-in-duct-circular-pki-range","title":"Systemair Fire Damper In-Duct Circular (PKI Range)","description":"\u003cp\u003eSystemair Fire Damper In-Duct Circular (PKI Range) are designed to fit inside spiral ductwork. Fire dampers represent passive fire protection, designed with the help of compartmentalisation to prevent the spread of toxic gases, smoke and fire. They are are designed and certified in accordance with the test criteria’s EIS according to EN 1366–2.\u003c\/p\u003e\n\u003cp\u003eA fire damper together with its installation form an inseparable part of the fire resistivity rating.\u003c\/p\u003e\n\u003cp\u003eThe Damper closes after the melting of the thermal fuse. After the closing of the damper blade, it is mechanically locked in the closed position and can only be opened manually, which requires access of the maintenance staff into the duct.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003e✓ \u003c\/span\u003eSpiral ductwork\u003cbr\u003e\u003cspan\u003e✓ P\u003c\/span\u003ereventing the spread of toxic gases, smoke and fire.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003eTechnical Data\u003c\/strong\u003e\u003cbr\u003eThe actuating mechanism is activated when the temperature of the air in the duct reaches 72°C.\u003c\/p\u003e\n\u003cp\u003e• PKI-dia-120 Circular fire damper with a maximum fire resistivity of 120 minutes.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eManuals \u0026amp; Guides\u003c\/b\u003e\u003cbr\u003e\u003ca title=\"Data Sheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_PKI-C-EI120S-100-ZV.pdf?v=1612862610\"\u003e\u003cspan\u003eSystemair Fire Damper In-Duct Circular PKI 100 Dia (120 mins) Datasheet\u003c\/span\u003e\u003c\/a\u003e\u003cbr\u003e \u003ca title=\"Data Sheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_PKI-C-EI120S-125-ZV.pdf?v=1612862610\"\u003eSystemair Fire Damper In-Duct Circular PKI 125 Dia (120 mins) Datasheet\u003c\/a\u003e\u003cbr\u003e \u003ca title=\"Data Sheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_PKI-C-EI120S-150-ZV.pdf?v=1612862610\"\u003eSystemair Fire Damper In-Duct Circular PKI 150 Dia (120 mins) Datasheet\u003c\/a\u003e\u003cbr\u003e \u003ca title=\"Data Sheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_PKI-C-EI120S-200-ZV.pdf?v=1612862610\"\u003eSystemair Fire Damper In-Duct Circular PKI 200 Dia (120 mins) Datasheet\u003c\/a\u003e\u003cbr\u003e \u003ca title=\"Systemair Fire Damper In-Duct Circular (PKI Range) User Manual\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/A-PKI-C_USERMANUAL_ENG_GLO_USERMANUAL_PKI-C_EN.PDF?v=1653908748\" target=\"_blank\"\u003eSystemair Fire Damper In-Duct Circular (PKI Range) User Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Systemair","offers":[{"title":"100mm dia 120 mins","offer_id":33482561650821,"sku":"238105","price":58.06,"currency_code":"GBP","in_stock":true},{"title":"125mm dia 120 mins","offer_id":33482561781893,"sku":"238107","price":64.99,"currency_code":"GBP","in_stock":true},{"title":"150mm dia 120 mins","offer_id":33482562011269,"sku":"238109","price":79.77,"currency_code":"GBP","in_stock":true},{"title":"200mm dia 120 mins","offer_id":33482562240645,"sku":"238112","price":105.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/FC2_2f4efb73-4b81-44e9-b084-098794ed71fb.png?v=1791313001"},{"product_id":"square-intumescent-air-transfer-fire-block-150mm","title":"Square Intumescent Air Transfer Fire Block - 150mm","description":"\u003cp\u003eThe 150mm Square Intumescent Air Transfer Fire Block is a high-performance air transfer grille for doors, walls and ducts that gives good airflow and quiet operation in normal use, then seals the aperture in a fire. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.\u003c\/p\u003e\u003cp\u003eSlim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black\/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.\u003c\/p\u003e\u003cp\u003eEach fire block is made to order, so please allow approximately one week for delivery.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e150 x 150mm\u003c\/li\u003e\n\u003cli\u003eIntumescent fire block\u003c\/li\u003e\n\u003cli\u003eUp to 120 min in walls and ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntumescent air transfer fire block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150mm x 150mm x 38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (timber doors)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (walls and ducts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoors, walls, ducts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\/grey (other colours on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLead time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade to order, approx. 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"eFans","offers":[{"title":"Default Title","offer_id":34203408990341,"sku":"LV40150150","price":40.76,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/fire-block-damper.jpg?v=1613161901"},{"product_id":"square-intumescent-air-transfer-fire-block-200mm","title":"Square Intumescent Air Transfer Fire Block - 200mm","description":"\u003cp\u003eThe 200mm Square Intumescent Air Transfer Fire Block is a high-performance air transfer grille for doors, walls and ducts that gives good airflow and quiet operation in normal use, then seals the aperture in a fire. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.\u003c\/p\u003e\u003cp\u003eSlim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black\/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.\u003c\/p\u003e\u003cp\u003eEach fire block is made to order, so please allow approximately one week for delivery.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e200 x 200mm\u003c\/li\u003e\n\u003cli\u003eIntumescent fire block\u003c\/li\u003e\n\u003cli\u003eUp to 120 min in walls and ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntumescent air transfer fire block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200mm x 200mm x 38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (timber doors)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (walls and ducts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoors, walls, ducts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\/grey (other colours on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLead time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade to order, approx. 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"eFans","offers":[{"title":"Default Title","offer_id":34203428487301,"sku":"LV40200200","price":58.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/fire-block-damper_301e3f10-a440-4a51-be04-8fd038fb4c54.jpg?v=1613161902"},{"product_id":"square-intumescent-air-transfer-fire-block-250mm","title":"Square Intumescent Air Transfer Fire Block - 250mm","description":"\u003cp\u003eThe 250mm Square Intumescent Air Transfer Fire Block is a high-performance air transfer grille for doors, walls and ducts that gives good airflow and quiet operation in normal use, then seals the aperture in a fire. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.\u003c\/p\u003e\u003cp\u003eSlim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black\/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.\u003c\/p\u003e\u003cp\u003eEach fire block is made to order, so please allow approximately one week for delivery.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e250 x 250mm\u003c\/li\u003e\n\u003cli\u003eIntumescent fire block\u003c\/li\u003e\n\u003cli\u003eUp to 120 min in walls and ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntumescent air transfer fire block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250mm x 250mm x 38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (timber doors)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (walls and ducts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoors, walls, ducts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\/grey (other colours on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLead time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade to order, approx. 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"eFans","offers":[{"title":"Default Title","offer_id":34203428913285,"sku":"LV40250250","price":63.38,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/fire-block-damper_7a8df80f-0a03-44e4-aff0-5ddd126ac14a.jpg?v=1613161903"},{"product_id":"square-intumescent-air-transfer-fire-block-300mm","title":"Square Intumescent Air Transfer Fire Block - 300mm","description":"\u003cp\u003eThe 300mm Square Intumescent Air Transfer Fire Block is a high-performance air transfer grille for doors, walls and ducts that gives good airflow and quiet operation in normal use, then seals the aperture in a fire. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.\u003c\/p\u003e\u003cp\u003eSlim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black\/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.\u003c\/p\u003e\u003cp\u003eEach fire block is made to order, so please allow approximately one week for delivery.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e300 x 300mm\u003c\/li\u003e\n\u003cli\u003eIntumescent fire block\u003c\/li\u003e\n\u003cli\u003eUp to 120 min in walls and ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntumescent air transfer fire block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300mm x 300mm x 38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (timber doors)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (walls and ducts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoors, walls, ducts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\/grey (other colours on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLead time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade to order, approx. 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"eFans","offers":[{"title":"Default Title","offer_id":34203431927941,"sku":"LV40300300","price":63.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/fire-block-damper_6f60d93e-c883-4545-a3b3-9e2cfed6a1cd.jpg?v=1613161904"},{"product_id":"square-intumescent-air-transfer-fire-block-350mm","title":"Square Intumescent Air Transfer Fire Block - 350mm","description":"\u003cp\u003eThe 350mm Square Intumescent Air Transfer Fire Block is a high-performance air transfer grille for doors, walls and ducts that gives good airflow and quiet operation in normal use, then seals the aperture in a fire. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.\u003c\/p\u003e\u003cp\u003eSlim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black\/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.\u003c\/p\u003e\u003cp\u003eEach fire block is made to order, so please allow approximately one week for delivery.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e350 x 350mm\u003c\/li\u003e\n\u003cli\u003eIntumescent fire block\u003c\/li\u003e\n\u003cli\u003eUp to 120 min in walls and ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntumescent air transfer fire block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e350mm x 350mm x 38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (timber doors)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (walls and ducts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoors, walls, ducts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\/grey (other colours on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLead time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade to order, approx. 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"eFans","offers":[{"title":"Default Title","offer_id":34203432059013,"sku":"LV40350350","price":87.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/fire-block-damper_9b63b23d-cdf1-443b-8822-6cf59dc29c78.jpg?v=1613161905"},{"product_id":"square-intumescent-air-transfer-fire-block-400mm","title":"Square Intumescent Air Transfer Fire Block - 400mm","description":"\u003cp\u003eThe 400mm Square Intumescent Air Transfer Fire Block is a high-performance air transfer grille for doors, walls and ducts that gives good airflow and quiet operation in normal use, then seals the aperture in a fire. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.\u003c\/p\u003e\u003cp\u003eSlim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black\/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.\u003c\/p\u003e\u003cp\u003eEach fire block is made to order, so please allow approximately one week for delivery.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e400 x 400mm\u003c\/li\u003e\n\u003cli\u003eIntumescent fire block\u003c\/li\u003e\n\u003cli\u003eUp to 120 min in walls and ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntumescent air transfer fire block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400mm x 400mm x 38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (timber doors)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (walls and ducts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoors, walls, ducts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\/grey (other colours on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLead time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade to order, approx. 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"eFans","offers":[{"title":"Default Title","offer_id":34203433533573,"sku":"LV40400400","price":107.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/fire-block-damper_b027aee0-0f9e-4ac1-952d-603c23454cd6.jpg?v=1613161905"},{"product_id":"square-intumescent-air-transfer-fire-block-450mm","title":"Square Intumescent Air Transfer Fire Block - 450mm","description":"\u003cp\u003eThe 450mm Square Intumescent Air Transfer Fire Block is a high-performance air transfer grille for doors, walls and ducts that gives good airflow and quiet operation in normal use, then seals the aperture in a fire. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.\u003c\/p\u003e\u003cp\u003eSlim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black\/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.\u003c\/p\u003e\u003cp\u003eEach fire block is made to order, so please allow approximately one week for delivery.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e450 x 450mm\u003c\/li\u003e\n\u003cli\u003eIntumescent fire block\u003c\/li\u003e\n\u003cli\u003eUp to 120 min in walls and ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntumescent air transfer fire block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e450mm x 450mm x 38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (timber doors)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (walls and ducts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoors, walls, ducts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\/grey (other colours on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLead time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade to order, approx. 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"eFans","offers":[{"title":"Default Title","offer_id":34203434385541,"sku":"LV40450450","price":137.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/fire-block-damper_f04f3eaa-186a-4eb5-8c0c-d91e57ac609d.jpg?v=1613161906"},{"product_id":"square-intumescent-air-transfer-fire-block-500mm","title":"Square Intumescent Air Transfer Fire Block - 500mm","description":"\u003cp\u003eThe 500mm Square Intumescent Air Transfer Fire Block is a high-performance air transfer grille for doors, walls and ducts that gives good airflow and quiet operation in normal use, then seals the aperture in a fire. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.\u003c\/p\u003e\u003cp\u003eSlim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black\/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.\u003c\/p\u003e\u003cp\u003eEach fire block is made to order, so please allow approximately one week for delivery.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e500 x 500mm\u003c\/li\u003e\n\u003cli\u003eIntumescent fire block\u003c\/li\u003e\n\u003cli\u003eUp to 120 min in walls and ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntumescent air transfer fire block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500mm x 500mm x 38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (timber doors)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (walls and ducts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoors, walls, ducts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\/grey (other colours on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLead time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade to order, approx. 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"eFans","offers":[{"title":"Default Title","offer_id":34203435958405,"sku":"LV40500500","price":217.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/fire-block-damper_c868baee-4197-44ac-a144-ee50756db1a4.jpg?v=1613161907"},{"product_id":"square-intumescent-air-transfer-fire-block-600mm","title":"Square Intumescent Air Transfer Fire Block - 600mm","description":"\u003cp\u003eThe 600mm Square Intumescent Air Transfer Fire Block is a high-performance air transfer grille for doors, walls and ducts that gives good airflow and quiet operation in normal use, then seals the aperture in a fire. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.\u003c\/p\u003e\u003cp\u003eSlim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black\/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.\u003c\/p\u003e\u003cp\u003eEach fire block is made to order, so please allow approximately one week for delivery.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e600 x 600mm\u003c\/li\u003e\n\u003cli\u003eIntumescent fire block\u003c\/li\u003e\n\u003cli\u003eUp to 120 min in walls and ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntumescent air transfer fire block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600mm x 600mm x 38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (timber doors)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (walls and ducts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoors, walls, ducts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\/grey (other colours on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLead time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade to order, approx. 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"eFans","offers":[{"title":"Default Title","offer_id":34203438448773,"sku":"LV40600600","price":199.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/fire-block-damper_485bc6b6-8475-4aff-a6fe-fe5e1de84576.jpg?v=1613161907"},{"product_id":"bsb-fd-c-series-circular-single-blade-externally-resettable-combination-fire-and-volume-control-damper","title":"BSB FD-C Series Circular Single Blade Externally Resettable Combination Fire and Volume Control Damper","description":"\u003cp\u003eThe BSB FD-C Series is a manually operated single-blade circular fire damper with an integrated volume control facility, designed for installations where space is at a premium. The damper, thermal fuse and reset are all accessed from outside the duct, making commissioning and maintenance straightforward.\u003c\/p\u003e\u003cp\u003eIt is an ES-classified fire damper with reduced smoke leakage (BS EN 1366-2), air-control tested to BS EN 1751, with a casing conforming to BS EN 1506, a replaceable fusible link, and an external blade position indicator. The standard case length is 320mm and it is available in 8 sizes from 100mm to 315mm diameter.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e100mm to 315mm diameter\u003c\/li\u003e\n\u003cli\u003eFire + volume control damper\u003c\/li\u003e\n\u003cli\u003eExternally resettable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBSB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFD-C Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCombination fire and volume control damper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamper shape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular single blade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eClassification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eES (BS EN 1366-2), reduced smoke leakage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBS EN 1751 (air control), BS EN 1506 (casing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCase length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e320mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100mm to 315mm diameter (8 sizes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReset\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExternally resettable, replaceable fusible link\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eManuals \u0026amp; Guides\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/BSB_FD-C_Fire_Damper_Datasheet.pdf?v=1620436499\" title=\"Data Sheet\" target=\"_blank\"\u003eBSB FD-C Series Circular Single Blade Data Sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"BSB","offers":[{"title":"100mm dia","offer_id":34641218175132,"sku":"EF100-FD","price":85.99,"currency_code":"GBP","in_stock":true},{"title":"125mm dia","offer_id":34641236066460,"sku":"EF125-FD","price":89.99,"currency_code":"GBP","in_stock":true},{"title":"150mm dia","offer_id":34641329553564,"sku":"EF150-FD","price":94.99,"currency_code":"GBP","in_stock":true},{"title":"160mm dia","offer_id":34641383653532,"sku":"EF160-FD","price":99.99,"currency_code":"GBP","in_stock":true},{"title":"200mm dia","offer_id":34641394237596,"sku":"EF200-FD","price":109.99,"currency_code":"GBP","in_stock":true},{"title":"250mm dia","offer_id":34641397055644,"sku":"EF250-FD","price":121.99,"currency_code":"GBP","in_stock":true},{"title":"300mm dia","offer_id":34641400823964,"sku":"EF300-FD","price":129.99,"currency_code":"GBP","in_stock":true},{"title":"315mm dia","offer_id":34641418158236,"sku":"EF315-FD","price":133.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/bsb-fire-damper.jpg?v=1733757345"},{"product_id":"air-valve-with-fire-damper","title":"Air Valve With Fire Damper","description":"\u003cp\u003eThe Air Valve With Fire Damper is a FläktWoods KSOF exhaust valve that doubles as a fire damper, stopping fire and smoke spreading into the duct system. It is CE marked to EN 15650:2010 and tested to EN 1366-2, and has a low sound level with good natural sound attenuation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExhaust valve and fire damper in one\u003c\/li\u003e\n\u003cli\u003eCE marked to EN 15650:2010, tested to EN 1366-2\u003c\/li\u003e\n\u003cli\u003eSpring-loaded fusible link closes the valve at 70°C\u003c\/li\u003e\n\u003cli\u003eHot-galvanised steel, powder-coated white (RAL 9010) with CleanVent coating as standard\u003c\/li\u003e\n\u003cli\u003eGood natural sound attenuation and low sound level\u003c\/li\u003e\n\u003cli\u003eSuitable for horizontal and vertical ducting\u003c\/li\u003e\n\u003cli\u003eSupplied with its KKT mounting ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eExhaust ventilation systems requiring fire and smoke containment\u003c\/li\u003e\n\u003cli\u003eFire-rated wall and floor duct penetrations (E45 to E120 depending on installation)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eSupplied complete with a spring-loaded fuse and fixed by a screwing action, locating the valve lugs into the indents in the supplied KKT mounting ring. Suitable for horizontal and vertical ducting. Should be installed in line with the building fire strategy by a competent installer.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFläktWoods\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKSOF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFire damper exhaust valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100, 125, 150 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE marked EN 15650:2010 (tested EN 1366-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eE45 to E120 per installation (EN 13501-3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFusible link\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCloses at 70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAirflow\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e122 to 288 m³\/h by size (at 30 dB(A))\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHot-galvanised steel, powder-coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite RAL 9010 (CleanVent coating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCeiling or wall (KKT ring supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eManuals \u0026amp; Guides\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Air_Valve_Fire_Damper_KSOF_Datasheet.pdf\" target=\"_blank\" rel=\"noopener\"\u003eAir Valve With Fire Damper (KSOF) Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"FlaktWoods","offers":[{"title":"100mm","offer_id":37801976332444,"sku":"KSOF100","price":78.34,"currency_code":"GBP","in_stock":true},{"title":"125mm","offer_id":53478919930235,"sku":"KSOF125","price":86.42,"currency_code":"GBP","in_stock":true},{"title":"150mm","offer_id":37801976365212,"sku":"KSOF150","price":94.51,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/valve-damper.jpg?v=1613486731"},{"product_id":"circular-intumescent-fire-block-100mm-52935","title":"Circular Intumescent Fire Block 100mm - 52935","description":"\u003cp\u003eThe 100mm Circular Intumescent Fire Block fits 100mm diameter spiral ducting and seals the duct in a fire while allowing air transfer in normal use. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.\u003c\/p\u003e\u003cp\u003eSlim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black\/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e100mm diameter\u003c\/li\u003e\n\u003cli\u003eIntumescent fire block\u003c\/li\u003e\n\u003cli\u003eUp to 120 min in walls and ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntumescent fire block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (timber doors)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (walls and ducts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoors, walls, ducts (fits spiral duct)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\/grey (other colours on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eManuals \u0026amp; Guides\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Fireblock-Datasheet.pdf?v=1655825145\" title=\"Circular Intumescent Fire Block Data Sheet\" target=\"_blank\"\u003eCircular Intumescent Fire Block Data Sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"eFans","offers":[{"title":"Default Title","offer_id":46460436054337,"sku":"52935","price":79.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/FBCCirularWallDoorMount_2de2f60f-e7e7-47ac-a714-7ed323f8b1ec.jpg?v=1692979838"},{"product_id":"circular-intumescent-fire-block-125mm-52930","title":"Circular Intumescent Fire Block 125mm - 52930","description":"\u003cp\u003eThe 125mm Circular Intumescent Fire Block fits 125mm diameter spiral ducting and seals the duct in a fire while allowing air transfer in normal use. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.\u003c\/p\u003e\u003cp\u003eSlim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black\/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e125mm diameter\u003c\/li\u003e\n\u003cli\u003eIntumescent fire block\u003c\/li\u003e\n\u003cli\u003eUp to 120 min in walls and ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntumescent fire block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e125mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (timber doors)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (walls and ducts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoors, walls, ducts (fits spiral duct)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\/grey (other colours on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eManuals \u0026amp; Guides\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Fireblock-Datasheet.pdf?v=1655825145\" title=\"Circular Intumescent Fire Block Data Sheet\" target=\"_blank\"\u003eCircular Intumescent Fire Block Data Sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"eFans","offers":[{"title":"Default Title","offer_id":46460448440641,"sku":"52930","price":90.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/FBCCirularWallDoorMount_f7543556-2ab4-4129-a3ae-affe424e52a6.jpg?v=1692979999"},{"product_id":"circular-intumescent-fire-block-150mm-52931","title":"Circular Intumescent Fire Block 150mm - 52931","description":"\u003cp\u003eThe 150mm Circular Intumescent Fire Block fits 150mm diameter spiral ducting and seals the duct in a fire while allowing air transfer in normal use. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.\u003c\/p\u003e\u003cp\u003eSlim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black\/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e150mm diameter\u003c\/li\u003e\n\u003cli\u003eIntumescent fire block\u003c\/li\u003e\n\u003cli\u003eUp to 120 min in walls and ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntumescent fire block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (timber doors)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (walls and ducts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoors, walls, ducts (fits spiral duct)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\/grey (other colours on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eManuals \u0026amp; Guides\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Fireblock-Datasheet.pdf?v=1655825145\" title=\"Circular Intumescent Fire Block Data Sheet\" target=\"_blank\"\u003eCircular Intumescent Fire Block Data Sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"eFans","offers":[{"title":"Default Title","offer_id":46460455846209,"sku":"52931","price":101.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/FBCCirularWallDoorMount_89919b0e-ebc3-4132-ae6f-415dbf0392e7.jpg?v=1692980074"},{"product_id":"circular-intumescent-fire-block-200mm-52932","title":"Circular Intumescent Fire Block 200mm - 52932","description":"\u003cp\u003eThe 200mm Circular Intumescent Fire Block fits 200mm diameter spiral ducting and seals the duct in a fire while allowing air transfer in normal use. It has no moving parts: the intumescent core expands in heat to form an incombustible mass that blocks the spread of fire and hot smoke.\u003c\/p\u003e\u003cp\u003eSlim at 38mm thick with roughly 60% free area, it is tested in timber doors rated up to 60 minutes and in walls and ductwork rated up to 120 minutes. Finished in black\/grey, it needs little maintenance beyond an occasional wipe with a damp cloth.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e200mm diameter\u003c\/li\u003e\n\u003cli\u003eIntumescent fire block\u003c\/li\u003e\n\u003cli\u003eUp to 120 min in walls and ducts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVertical and horizontal ducted ventilation systems\u003c\/li\u003e\n\u003cli\u003eAirflow control and fire protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntumescent fire block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (timber doors)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating (walls and ducts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFree area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoors, walls, ducts (fits spiral duct)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\/grey (other colours on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eManuals \u0026amp; Guides\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Fireblock-Datasheet.pdf?v=1655825145\" title=\"Circular Intumescent Fire Block Data Sheet\" target=\"_blank\"\u003eCircular Intumescent Fire Block Data Sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"eFans","offers":[{"title":"Default Title","offer_id":46460463251777,"sku":"52932","price":115.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/FBCCirularWallDoorMount_31c7426e-7a65-4a0d-9aca-b105c292601e.jpg?v=1692980151"},{"product_id":"bsb-fd-series-circular-curtain-fire-damper","title":"BSB FD Series Circular Curtain Fire Damper with Angle Frame","description":"\u003cp\u003eThe BSB FD Series circular curtain fire damper is a mechanical, fusible link fire damper for circular ductwork passing through fire rated walls, floors and cavity barriers. When duct air reaches 72°C the link melts and a spring-loaded steel curtain closes across the duct, maintaining the compartment. Each damper is supplied with an angle frame for building in.\u003c\/p\u003e\n\u003cp\u003eBecause the folded curtain sits clear of the airstream in normal running, pressure drop and noise are very low, which makes it a good choice for larger ducts and higher air velocities. It is made to order by BSB in the UK.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e100mm to 630mm diameter (11 sizes)\u003c\/li\u003e\n\u003cli\u003eE classified to BS EN 13501-3, up to E120 depending on installation\u003c\/li\u003e\n\u003cli\u003eSupplied with angle frame\u003c\/li\u003e\n\u003cli\u003eMade to order, approx. 1 week lead time\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat it is best used for\u003c\/h3\u003e\n\u003cp\u003eDucted supply and extract systems in commercial buildings, schools, healthcare and residential blocks where a circular duct passes through a fire compartment wall or floor. It suits plant room and riser penetrations, and larger diameter mains where a single-blade damper would add noticeable resistance.\u003c\/p\u003e\n\u003ch3\u003eCurtain blade or FD-C?\u003c\/h3\u003e\n\u003cp\u003eOur \u003ca href=\"\/products\/bsb-fd-c-series-circular-single-blade-externally-resettable-combination-fire-and-volume-control-damper\"\u003eBSB FD-C\u003c\/a\u003e is a single-blade damper with external reset, volume control and an ES (reduced smoke leakage) rating, but only goes up to 315mm. The FD Series curtain damper is E rated (integrity), is tested and reset through an access panel in the ductwork, and covers sizes up to 630mm. If the specification calls for ES or you need external reset in a tight ceiling void, choose FD-C. For larger ducts, low pressure loss or a straightforward like-for-like curtain damper replacement, choose this one.\u003c\/p\u003e\n\u003ch3\u003eInstallation notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall to BSB's tested installation method for the wall or floor type, using the supplied angle frame, so the fire rating is valid.\u003c\/li\u003e\n\u003cli\u003eAllow at least 75mm clearance to adjacent walls, floors and ceilings, and use break-away joints on the connecting ductwork.\u003c\/li\u003e\n\u003cli\u003eFit an access panel next to the damper. Fire dampers must be drop tested and inspected at least annually (BS 9999 Annex W) and records kept under the Regulatory Reform (Fire Safety) Order.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMade to order\u003c\/h3\u003e\n\u003cp\u003eThese dampers are built to order and are not held in stock. The current lead time is around 1 week from order. Because they are made to order they cannot be returned or cancelled, so please check the duct diameter before ordering. Need a size or option not listed, such as stainless steel, a HEVAC frame or a microswitch? Email \u003ca href=\"mailto:hello@efans.co.uk\"\u003ehello@efans.co.uk\u003c\/a\u003e or call 0161 399 3825 for a quote.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBSB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFD Series, circular (type C), galvanised, angle frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMechanical curtain blade fire damper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eClassification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eE rated, BS EN 13501-3, tested to BS EN 1366-2, up to E120 depending on installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBS EN 15650, BS EN 1751 Class 2 blade leakage, LPS 1162, DW 144\/145\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFusible link\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGalvanised steel casing (min 1.2mm) and curtain blades, stainless steel closure springs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrame\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAngle frame (AF) supplied\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100mm to 630mm diameter (11 sizes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTesting and reset\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVia access panel in ductwork\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLead time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade to order, approx. 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eManuals \u0026amp; Guides\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/BSB_FD_Series_Curtain_Fire_Damper_Datasheet.pdf?v=1791486768\" target=\"_blank\"\u003eBSB FD Series Curtain Fire Damper Data Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eBrowse our full range of \u003ca href=\"\/collections\/fire-dampers\"\u003efire dampers\u003c\/a\u003e.\u003c\/p\u003e","brand":"BSB","offers":[{"title":"100mm dia","offer_id":56497055433083,"sku":"CFDAF100","price":84.99,"currency_code":"GBP","in_stock":true},{"title":"125mm dia","offer_id":56497055465851,"sku":"CFDAF125","price":85.99,"currency_code":"GBP","in_stock":true},{"title":"150mm dia","offer_id":56497055498619,"sku":"CFDAF150","price":86.99,"currency_code":"GBP","in_stock":true},{"title":"200mm dia","offer_id":56497055531387,"sku":"CFDAF200","price":88.99,"currency_code":"GBP","in_stock":true},{"title":"315mm dia","offer_id":56497055564155,"sku":"CFDAF315","price":105.99,"currency_code":"GBP","in_stock":true},{"title":"355mm dia","offer_id":56497055596923,"sku":"CFDAF355","price":111.99,"currency_code":"GBP","in_stock":true},{"title":"400mm dia","offer_id":56497055629691,"sku":"CFDAF400","price":116.99,"currency_code":"GBP","in_stock":true},{"title":"450mm dia","offer_id":56497055662459,"sku":"CFDAF450","price":130.99,"currency_code":"GBP","in_stock":true},{"title":"500mm dia","offer_id":56497055695227,"sku":"CFDAF500","price":151.99,"currency_code":"GBP","in_stock":true},{"title":"560mm dia","offer_id":56497055727995,"sku":"CFDAF560","price":187.99,"currency_code":"GBP","in_stock":true},{"title":"630mm dia","offer_id":56497055760763,"sku":"CFDAF630","price":194.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/bsb-fd-circular-curtain-fire-damper.jpg?v=1791487299"},{"product_id":"bsb-fd-r-series-rectangular-fire-damper","title":"BSB FD-R Series Rectangular Fire Damper 100x100 to 300x300mm","description":"\u003cp\u003eThe BSB FD-R Series is a mechanical single-blade fire damper for rectangular ductwork passing through fire rated walls and floors, with built-in volume control. The damper, fusible link and reset are all accessed from outside the duct, so it can be drop tested and reset without opening the ductwork, which makes commissioning and annual testing much quicker in tight ceiling voids.\u003c\/p\u003e\n\u003cp\u003eIt is ES classified (reduced smoke leakage) to BS EN 1366-2, and can be installed from one side of the wall without fire rated infill material. Made to order by BSB in the UK.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 sizes from 100 x 100mm to 300 x 300mm\u003c\/li\u003e\n\u003cli\u003eES rated, up to E120 S depending on installation\u003c\/li\u003e\n\u003cli\u003eExternally resettable, with built-in volume control\u003c\/li\u003e\n\u003cli\u003eMade to order, approx. 1 week lead time\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat it is best used for\u003c\/h3\u003e\n\u003cp\u003eSmaller rectangular supply and extract ducts in offices, schools, healthcare, hotels and residential blocks where the duct passes through a fire compartment wall or floor. It is especially useful where access is limited, because testing and resetting are done from outside the duct.\u003c\/p\u003e\n\u003ch3\u003eFD-R, FD-C or curtain damper?\u003c\/h3\u003e\n\u003cp\u003eThe FD-R is the rectangular version of our \u003ca href=\"\/products\/bsb-fd-c-series-circular-single-blade-externally-resettable-combination-fire-and-volume-control-damper\"\u003eBSB FD-C\u003c\/a\u003e circular damper: same single-blade, externally resettable design with volume control. For circular ducts choose FD-C, or the \u003ca href=\"\/products\/bsb-fd-series-circular-curtain-fire-damper\"\u003eBSB FD Series curtain damper\u003c\/a\u003e for circular sizes above 315mm. For rectangular ducts larger than 300 x 300mm, contact us for a curtain damper quote.\u003c\/p\u003e\n\u003ch3\u003eInstallation notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall to BSB's tested method for the wall or floor type using the supplied frame, so the fire rating is valid. It fixes from one side only with no infill needed.\u003c\/li\u003e\n\u003cli\u003eLeave a 10mm gap around the damper, at least 75mm to adjacent walls, floors and ceilings, and use break-away joints on the connecting ductwork.\u003c\/li\u003e\n\u003cli\u003eFire dampers must be inspected and drop tested regularly (BS 9999) with records kept under the Regulatory Reform (Fire Safety) Order. BSB recommend intervals of no more than six months.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMade to order\u003c\/h3\u003e\n\u003cp\u003eThese dampers are built to order and are not held in stock. The current lead time is around 1 week from order. Because they are made to order they cannot be returned or cancelled, so please check the duct width and height before ordering. Need a size not listed? Email \u003ca href=\"mailto:hello@efans.co.uk\"\u003ehello@efans.co.uk\u003c\/a\u003e or call 0161 399 3825 for a quote.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBSB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFD-R Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle-blade rectangular fire damper with volume control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eClassification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eES, tested to BS EN 1366-2, classified to BS EN 13501-3. E120 S in masonry floors; E120 \/ E60 S in drywall and masonry walls (see datasheet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBS EN 15650 (CE marked), BS EN 1751 Class 2 blade \/ Class C case leakage, DW 144\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFusible link\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72°C, externally replaceable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGalvanised steel case (0.9mm), 1.2mm galvanised steel blade with intumescent seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCase length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300mm to 400mm depending on height\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 x 100mm to 300 x 300mm (15 sizes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReset\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExternal test and reset, external blade position indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLead time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade to order, approx. 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eManuals \u0026amp; Guides\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/BSB_FD-R_Series_Fire_Damper_Datasheet.pdf?v=1791549540\" target=\"_blank\"\u003eBSB FD-R Series Fire Damper Data Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eBrowse our full range of \u003ca href=\"\/collections\/fire-dampers\"\u003efire dampers\u003c\/a\u003e.\u003c\/p\u003e","brand":"BSB","offers":[{"title":"100 x 100mm","offer_id":56498909315451,"sku":"FD-R100-100","price":96.99,"currency_code":"GBP","in_stock":true},{"title":"150 x 100mm","offer_id":56498909348219,"sku":"FD-R150-100","price":97.99,"currency_code":"GBP","in_stock":true},{"title":"150 x 150mm","offer_id":56498909380987,"sku":"FD-R150-150","price":99.99,"currency_code":"GBP","in_stock":true},{"title":"200 x 100mm","offer_id":56498909413755,"sku":"FD-R200-100","price":97.99,"currency_code":"GBP","in_stock":true},{"title":"200 x 150mm","offer_id":56498909446523,"sku":"FD-R200-150","price":101.99,"currency_code":"GBP","in_stock":true},{"title":"200 x 200mm","offer_id":56498909479291,"sku":"FD-R200-200","price":107.99,"currency_code":"GBP","in_stock":true},{"title":"250 x 100mm","offer_id":56498909512059,"sku":"FD-R250-100","price":98.99,"currency_code":"GBP","in_stock":true},{"title":"250 x 150mm","offer_id":56498909544827,"sku":"FD-R250-150","price":103.99,"currency_code":"GBP","in_stock":true},{"title":"250 x 200mm","offer_id":56498909577595,"sku":"FD-R250-200","price":114.99,"currency_code":"GBP","in_stock":true},{"title":"250 x 250mm","offer_id":56498909610363,"sku":"FD-R250-250","price":126.99,"currency_code":"GBP","in_stock":true},{"title":"300 x 100mm","offer_id":56498909643131,"sku":"FD-R300-100","price":101.99,"currency_code":"GBP","in_stock":true},{"title":"300 x 150mm","offer_id":56498909675899,"sku":"FD-R300-150","price":113.99,"currency_code":"GBP","in_stock":true},{"title":"300 x 200mm","offer_id":56498909708667,"sku":"FD-R300-200","price":125.99,"currency_code":"GBP","in_stock":true},{"title":"300 x 250mm","offer_id":56498909741435,"sku":"FD-R300-250","price":138.99,"currency_code":"GBP","in_stock":true},{"title":"300 x 300mm","offer_id":56498909774203,"sku":"FD-R300-300","price":146.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/019b-compressed-2048x1365.jpg?v=1791549606"}],"url":"https:\/\/www.efans.co.uk\/collections\/fire-dampers\/size-range_450-600mm.oembed","provider":"eFans Direct Ltd","version":"1.0","type":"link"}