{"title":"Twin Fans","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\u003eTwin fans have two fans in one insulated casing, set up as run and standby, so ventilation carries on if one motor stops. They are used where extract must not fail, such as commercial toilets, plant rooms and other critical supply or extract systems. We stock the Systemair KVK Duo with AC motors from 125mm to 315mm, the KVK Duo EC from 150mm to 630mm, and the KV DUO 315 EC, all in fully insulated AluZinc casings suitable for outdoor and roof installation. Use the buttons below to filter, or for help choosing, 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.\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\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat is a twin fan?\u003c\/h3\u003e\n\u003cp\u003eA twin fan, also called a run and standby fan, has two fan and motor sets in one casing. One fan runs while the other stands by. If the duty fan fails, the standby fan takes over, so the system keeps running while the failed motor is repaired.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the changeover work?\u003c\/h3\u003e\n\u003cp\u003eThe changeover between the two fans is handled by a run and standby controller or by the building controls, which also allow the fans to be alternated so both share the running hours. Check the datasheet for the model you are looking at, or ask us and we will advise on the controls.\u003c\/p\u003e\n\n\u003ch3\u003eAC or EC twin fan?\u003c\/h3\u003e\n\u003cp\u003eThe AC KVK Duo models are the lower cost option. The EC models use less energy, run quieter at reduced speed and are speed controlled through a 0-10V signal. Use the buttons above the products to filter by motor.\u003c\/p\u003e\n\n\u003ch3\u003eSingle phase or three phase?\u003c\/h3\u003e\n\u003cp\u003eThe KVK Duo AC models, the KVK Duo EC models up to 400mm and the KV DUO 315 EC run on a single phase 230V supply. The KVK Duo 500 EC and 630 EC are three phase.\u003c\/p\u003e\n\n\u003ch3\u003eCan twin fans be installed outside?\u003c\/h3\u003e\n\u003cp\u003eYes. The KVK Duo and KV DUO have fully insulated AluZinc casings and are suitable for outdoor and roof installation as standard. They can be installed in any position.\u003c\/p\u003e\n\n\u003ch3\u003eWhat air can a twin fan handle?\u003c\/h3\u003e\n\u003cp\u003eClean or contaminated air at temperatures up to 60°C. They are not suitable for greasy kitchen extract or hot process air: see our \u003ca href=\"\/collections\/high-temperature-fans\"\u003ehigh temperature fans\u003c\/a\u003e for those.\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=\"motor_ac\" href=\"\/collections\/twin-fans\/motor_ac\"\u003eAC\u003c\/a\u003e\n\u003ca rel=\"nofollow\" data-tag=\"motor_ec\" href=\"\/collections\/twin-fans\/motor_ec\"\u003eEC\u003c\/a\u003e\n\u003ca rel=\"nofollow\" data-tag=\"phase_phase-1\" href=\"\/collections\/twin-fans\/phase_phase-1\"\u003eSingle Phase\u003c\/a\u003e\n\u003ca rel=\"nofollow\" data-tag=\"phase_phase-3\" href=\"\/collections\/twin-fans\/phase_phase-3\"\u003eThree Phase\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cscript\u003e\n(function(){var n=document.getElementById('efans-subnav');if(!n)return;var base='\/collections\/twin-fans';\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{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a twin fan?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A twin fan, also called a run and standby fan, has two fan and motor sets in one casing. One fan runs while the other stands by. If the duty fan fails, the standby fan takes over, so the system keeps running while the failed motor is repaired.\"}}, {\"@type\": \"Question\", \"name\": \"How does the changeover work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The changeover between the two fans is handled by a run and standby controller or by the building controls, which also allow the fans to be alternated so both share the running hours. Check the datasheet for the model you are looking at, or ask us and we will advise on the controls.\"}}, {\"@type\": \"Question\", \"name\": \"AC or EC twin fan?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The AC KVK Duo models are the lower cost option. The EC models use less energy, run quieter at reduced speed and are speed controlled through a 0-10V signal. Use the buttons above the products to filter by motor.\"}}, {\"@type\": \"Question\", \"name\": \"Single phase or three phase?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The KVK Duo AC models, the KVK Duo EC models up to 400mm and the KV DUO 315 EC run on a single phase 230V supply. The KVK Duo 500 EC and 630 EC are three phase.\"}}, {\"@type\": \"Question\", \"name\": \"Can twin fans be installed outside?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The KVK Duo and KV DUO have fully insulated AluZinc casings and are suitable for outdoor and roof installation as standard. They can be installed in any position.\"}}, {\"@type\": \"Question\", \"name\": \"What air can a twin fan handle?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Clean or contaminated air at temperatures up to 60°C. They are not suitable for greasy kitchen extract or hot process air: see our high temperature fans for those.\"}}]}\n\u003c\/script\u003e\n","products":[{"product_id":"systemair-kvk-125-duo-twin-fan-125mm","title":"Systemair KVK 125 Duo Twin Fan - 125mm","description":"\u003cp\u003eKVK DUO models have double inlet centrifugal fans with forward-curved impellers and maintenance-free external rotor motors. To protect the motors from overheating the fans have integral thermal contacts with leads for connection to a motor protection device.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe KVK DUO models are manufactured from galvanised sheet steel and are thermally and acoustically insulated with a 50 mm layer of mineral wool. Internal surfaces are protected with perforated galvanised sheet steel.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSpeed-controllable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntegral thermal contacts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLow noise level\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTwin fan\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003eInstallation\u003cbr\u003e\u003c\/b\u003eThe fans are easy to connect to spiral ducts using FK mounting clamps.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003eSpecifications\u003cbr\u003e\u003c\/b\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 Manufacturers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct dimension; Circular, inlet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e125mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eManuals \u0026amp; Guides\u003cbr\u003e\u003c\/b\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_KVK_DUO_125_Circular_duct_fan.pdf?v=1596464084\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSystemair KVK 125 Duo Twin Fan - 125mm\u003c\/a\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":35319421239452,"sku":"5341","price":804.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/kvk_6999c0c3-0fcb-4e64-a114-e9dc215aa273.jpg?v=1597437294"},{"product_id":"systemair-kvk-160-duo-twin-fan-160mm","title":"Systemair KVK 160 Duo Twin Fan - 160mm","description":"\u003cp\u003eKVK DUO models have double inlet centrifugal fans with forward-curved impellers and maintenance-free external rotor motors. To protect the motors from overheating the fans have integral thermal contacts with leads for connection to a motor protection device.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe KVK DUO models are manufactured from galvanised sheet steel and are thermally and acoustically insulated with a 50 mm layer of mineral wool. Internal surfaces are protected with perforated galvanised sheet steel. \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSpeed-controllable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntegral thermal contacts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLow noise level\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTwin fan\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003eInstallation\u003cbr\u003e\u003c\/b\u003eThe fans are easy to connect to spiral ducts using FK mounting clamps.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003eSpecifications\u003cbr\u003e\u003c\/b\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 Manufacturers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct dimension; Circular, inlet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e160mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eManuals \u0026amp; Guides\u003cbr\u003e\u003c\/b\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_KVK_DUO_160_Circular_duct_fan.pdf?v=1596464339\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eSystemair KVK 160 Duo Twin Fan - 160mm\u003c\/a\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":35319425007772,"sku":"5127","price":920.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/kvk_b4b98140-273c-4fe1-9a19-3e49b925f07a.jpg?v=1597437294"},{"product_id":"systemair-kvk-200-duo-twin-fan-200mm","title":"Systemair KVK 200 Duo Twin Fan - 200mm","description":"\u003cp\u003eKVK DUO models have double inlet centrifugal fans with forward-curved impellers and maintenance-free external rotor motors. To protect the motors from overheating the fans have integral thermal contacts with leads for connection to a motor protection device. \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe KVK DUO models are manufactured from galvanised sheet steel and are thermally and acoustically insulated with a 50 mm layer of mineral wool. Internal surfaces are protected with perforated galvanised sheet steel.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSpeed-controllable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntegral thermal contacts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLow noise level\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTwin fan\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003eInstallation\u003cbr\u003e\u003c\/b\u003eThe fans are easy to connect to spiral ducts using FK mounting clamps.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003eSpecifications\u003cbr\u003e\u003c\/b\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 Manufacturers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct dimension; Circular, inlet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eManuals \u0026amp; Guides\u003cbr\u003e\u003c\/b\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_KVK_DUO_200_Circular_duct_fan.pdf?v=1596464621\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eSystemair KVK 200 Duo Twin Fan - 200mm\u003c\/a\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":35319468163228,"sku":"27792","price":1174.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/kvk_108fee22-f794-4b92-93ea-ea93f26c596a.jpg?v=1597437295"},{"product_id":"systemair-kvk-250-duo-twin-fan-250mm","title":"Systemair KVK 250 Duo Twin Fan - 250mm","description":"\u003cp\u003eKVK DUO models have double inlet centrifugal fans with forward-curved impellers and maintenance-free external rotor motors. To protect the motors from overheating the fans have integral thermal contacts with leads for connection to a motor protection device. \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe KVK DUO models are manufactured from galvanised sheet steel and are thermally and acoustically insulated with a 50 mm layer of mineral wool. Internal surfaces are protected with perforated galvanised sheet steel.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSpeed-controllable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntegral thermal contacts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLow noise level\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTwin fan\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003eInstallation\u003cbr\u003e\u003c\/b\u003eThe fans are easy to connect to spiral ducts using FK mounting clamps.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003eSpecifications\u003cbr\u003e\u003c\/b\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 Manufacturers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct dimension; Circular, inlet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eManuals \u0026amp; Guides\u003cbr\u003e\u003c\/b\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_KVK_DUO_250_Circular_duct_fan.pdf?v=1596464829\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eSystemair KVK 250 Duo Twin Fan - 250mm\u003c\/a\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":35319485333660,"sku":"27793","price":1314.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/kvk_ac743186-adbb-4837-9b96-f56aa4050018.jpg?v=1597437296"},{"product_id":"systemair-kvk-315l-duo-twin-fan-315mm","title":"Systemair KVK 315L Duo Twin Fan - 315mm","description":"\u003cp\u003eKVK DUO models have double inlet centrifugal fans with forward-curved impellers and maintenance-free external rotor motors. To protect the motors from overheating the fans have integral thermal contacts with leads for connection to a motor protection device. \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe KVK DUO models are manufactured from galvanised sheet steel and are thermally and acoustically insulated with a 50 mm layer of mineral wool. Internal surfaces are protected with perforated galvanised sheet steel.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSpeed-controllable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntegral thermal contacts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLow noise level\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTwin fan\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003eInstallation\u003cbr\u003e\u003c\/b\u003eThe fans are easy to connect to spiral ducts using FK mounting clamps.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003eSpecifications\u003cbr\u003e\u003c\/b\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 Manufacturers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct dimension; Circular, inlet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e315mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eManuals \u0026amp; Guides\u003cbr\u003e\u003c\/b\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_KVK_DUO_315L.pdf?v=1596465079\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eSystemair KVK 315L Duo Twin Fan - 315mm\u003c\/a\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":35319508238492,"sku":"93297","price":2088.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/kvk_8ad3a0c9-820c-48a5-8118-cc3e6d2d925e.jpg?v=1597437296"},{"product_id":"systemair-kv-duo-315-ec-twin-fan-76833","title":"Systemair KV DUO 315 EC Twin Fan 76833","description":"\u003cp\u003eThe Systemair KV DUO 315 EC is a twin Run \u0026amp; Standby duct fan with 315 mm circular connections, delivering up to 2008 m³\/h. Two fans share one fully-insulated casing so ventilation continues without interruption if one motor stops.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwin fan – Run \u0026amp; Standby for non-stop operation\u003c\/li\u003e\n\u003cli\u003eEnergy-efficient external-rotor EC motors\u003c\/li\u003e\n\u003cli\u003e0-10V speed control; IP65 terminal box\u003c\/li\u003e\n\u003cli\u003eFully-insulated AluZinc casing, low noise\u003c\/li\u003e\n\u003cli\u003eSuitable for external \/ roof installation as standard\u003c\/li\u003e\n\u003cli\u003eSafe and maintenance-free operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eApplications requiring non-interruptive (Run \u0026amp; Standby) ventilation\u003c\/li\u003e\n\u003cli\u003eCommercial supply or extract of clean or contaminated air\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eInstalls in any position, indoors or outdoors, on a single-phase (230V) supply. Connect to spiral duct using FK mounting clamps to prevent vibration transfer. Should be installed on a suitable circuit by a qualified electrician.\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKV DUO 315 EC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwin Run \u0026amp; Standby duct fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e315 mm circular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAirflow (max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2008 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExternal-rotor EC, single-phase (230V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCasing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluZinc, fully insulated; IP65 terminal box (IP54 motor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax air temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+60°C\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\/Systemair_KV_DUO_315_EC.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSystemair KV DUO 315 EC Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":36814894006428,"sku":"76833","price":2252.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/products\/KV_DUO_EC_NO_FEET_1.jpg?v=1605111058"},{"product_id":"systemair-kvk-duo-150-ec-twin-duct-fan-single-phase-150mm","title":"Systemair KVK Duo 150 EC Twin Duct Fan Single Phase - 150mm","description":"\u003cp\u003eThe Systemair KVK Duo 150 EC is a twin Run \u0026amp; Standby duct fan with 150 mm circular connections, delivering up to 548 m³\/h. Two fans share one fully-insulated casing so ventilation continues without interruption if one motor stops.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwin fan – Run \u0026amp; Standby for non-stop operation\u003c\/li\u003e\n\u003cli\u003eEnergy-efficient external-rotor EC motors\u003c\/li\u003e\n\u003cli\u003e0-10V speed control; IP65 terminal box\u003c\/li\u003e\n\u003cli\u003eFully-insulated AluZinc casing, low noise\u003c\/li\u003e\n\u003cli\u003eSuitable for external \/ roof installation as standard\u003c\/li\u003e\n\u003cli\u003eSafe and maintenance-free operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eApplications requiring non-interruptive (Run \u0026amp; Standby) ventilation\u003c\/li\u003e\n\u003cli\u003eCommercial supply or extract of clean or contaminated air\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eInstalls in any position, indoors or outdoors, on a single-phase (230V) supply. Connect to spiral duct using FK mounting clamps to prevent vibration transfer. Should be installed on a suitable circuit by a qualified electrician.\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKVK Duo 150 EC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwin Run \u0026amp; Standby duct fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150 mm circular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAirflow (max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e548 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExternal-rotor EC, single-phase (230V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCasing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluZinc, fully insulated; IP65 terminal box (IP44 motor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax air temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+60°C\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\/Systemair_KVK_Duo_150_EC_Twin_Duct_Fan_Single_Phase_-_150mm_datasheet.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSystemair KVK Duo 150 EC Datasheet\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_KVK_Duo_150_EC_Twin_Duct_Fan_Single_Phase_-_150mm_installation.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSystemair KVK Duo 150 EC Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47462336954689,"sku":"76830","price":1319.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/76830.jpg?v=1702577997"},{"product_id":"systemair-kvk-duo-250-ec-twin-duct-fan-single-phase-250mm","title":"Systemair KVK Duo 250 EC Twin Duct Fan Single Phase - 250mm","description":"\u003cp\u003eThe Systemair KVK Duo 250 EC is a twin Run \u0026amp; Standby duct fan with 250 mm circular connections, delivering up to 1152 m³\/h. Two fans share one fully-insulated casing so ventilation continues without interruption if one motor stops.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwin fan – Run \u0026amp; Standby for non-stop operation\u003c\/li\u003e\n\u003cli\u003eEnergy-efficient external-rotor EC motors\u003c\/li\u003e\n\u003cli\u003e0-10V speed control; IP65 terminal box\u003c\/li\u003e\n\u003cli\u003eFully-insulated AluZinc casing, low noise\u003c\/li\u003e\n\u003cli\u003eSuitable for external \/ roof installation as standard\u003c\/li\u003e\n\u003cli\u003eSafe and maintenance-free operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eApplications requiring non-interruptive (Run \u0026amp; Standby) ventilation\u003c\/li\u003e\n\u003cli\u003eCommercial supply or extract of clean or contaminated air\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eInstalls in any position, indoors or outdoors, on a single-phase (230V) supply. Connect to spiral duct using FK mounting clamps to prevent vibration transfer. Should be installed on a suitable circuit by a qualified electrician.\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKVK Duo 250 EC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwin Run \u0026amp; Standby duct fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250 mm circular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAirflow (max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1152 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExternal-rotor EC, single-phase (230V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCasing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluZinc, fully insulated; IP65 terminal box (IP54 motor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax air temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+60°C\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\/Systemair_KVK_Duo_250_EC_Twin_Duct_Fan_Single_Phase_-_250mm_datasheet.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSystemair KVK Duo 250 EC Datasheet\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_KVK_Duo_250_EC_Twin_Duct_Fan_Single_Phase_-_250mm_installation.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSystemair KVK Duo 250 EC Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47465882878273,"sku":"76832","price":1851.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/76832.jpg?v=1702578485"},{"product_id":"systemair-kvk-duo-315-ec-twin-duct-fan-single-phase-315mm","title":"Systemair KVK Duo 315 EC Twin Duct Fan Single Phase - 315mm","description":"\u003cp\u003eThe Systemair KVK Duo 315 EC is a twin Run \u0026amp; Standby duct fan with 315 mm circular connections, delivering up to 2008 m³\/h. Two fans share one fully-insulated casing so ventilation continues without interruption if one motor stops.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwin fan – Run \u0026amp; Standby for non-stop operation\u003c\/li\u003e\n\u003cli\u003eEnergy-efficient external-rotor EC motors\u003c\/li\u003e\n\u003cli\u003e0-10V speed control; IP65 terminal box\u003c\/li\u003e\n\u003cli\u003eFully-insulated AluZinc casing, low noise\u003c\/li\u003e\n\u003cli\u003eSuitable for external \/ roof installation as standard\u003c\/li\u003e\n\u003cli\u003eSafe and maintenance-free operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eApplications requiring non-interruptive (Run \u0026amp; Standby) ventilation\u003c\/li\u003e\n\u003cli\u003eCommercial supply or extract of clean or contaminated air\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eInstalls in any position, indoors or outdoors, on a single-phase (230V) supply. Connect to spiral duct using FK mounting clamps to prevent vibration transfer. Should be installed on a suitable circuit by a qualified electrician.\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKVK Duo 315 EC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwin Run \u0026amp; Standby duct fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e315 mm circular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAirflow (max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2008 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExternal-rotor EC, single-phase (230V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCasing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluZinc, fully insulated; IP65 terminal box (IP54 motor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax air temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+60°C\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\/Systemair_KVK_Duo_315_EC_Twin_Duct_Fan_Datasheet.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSystemair KVK Duo 315 EC Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47466032234817,"sku":"76833","price":2145.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/76833.jpg?v=1702579473"},{"product_id":"systemair-kvk-duo-400-ec-twin-duct-fan-single-phase-400mm","title":"Systemair KVK Duo 400 EC Twin Duct Fan Single Phase - 400mm","description":"\u003cp\u003eThe Systemair KVK Duo 400 EC is a twin Run \u0026amp; Standby duct fan with 400 mm circular connections, delivering up to 4492 m³\/h. Two fans share one fully-insulated casing so ventilation continues without interruption if one motor stops.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwin fan – Run \u0026amp; Standby for non-stop operation\u003c\/li\u003e\n\u003cli\u003eEnergy-efficient external-rotor EC motors\u003c\/li\u003e\n\u003cli\u003e0-10V speed control; IP65 terminal box\u003c\/li\u003e\n\u003cli\u003eFully-insulated AluZinc casing, low noise\u003c\/li\u003e\n\u003cli\u003eSuitable for external \/ roof installation as standard\u003c\/li\u003e\n\u003cli\u003eSafe and maintenance-free operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eApplications requiring non-interruptive (Run \u0026amp; Standby) ventilation\u003c\/li\u003e\n\u003cli\u003eCommercial supply or extract of clean or contaminated air\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eInstalls in any position, indoors or outdoors, on a single-phase (230V) supply. Connect to spiral duct using FK mounting clamps to prevent vibration transfer. Should be installed on a suitable circuit by a qualified electrician.\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKVK Duo 400 EC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwin Run \u0026amp; Standby duct fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400 mm circular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAirflow (max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4492 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExternal-rotor EC, single-phase (230V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCasing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluZinc, fully insulated; IP65 terminal box (IP54 motor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax air temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+60°C\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\/Systemair_KVK_Duo_400_EC_Twin_Duct_Fan_Single_Phase_-_400mm_datasheet.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSystemair KVK Duo 400 EC Datasheet\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_KVK_Duo_400_EC_Twin_Duct_Fan_Single_Phase_-_400mm_installation.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSystemair KVK Duo 400 EC Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47466225729857,"sku":"449462","price":3538.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/76834.jpg?v=1702585645"},{"product_id":"systemair-kvk-duo-500-ec-twin-duct-fan-three-phase-500mm","title":"Systemair KVK Duo 500 EC Twin Duct Fan Three Phase - 500mm","description":"\u003cp\u003eThe Systemair KVK Duo 500 EC is a twin Run \u0026amp; Standby duct fan with 500 mm circular connections, delivering up to 6422 m³\/h. Two fans share one fully-insulated casing so ventilation continues without interruption if one motor stops.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwin fan – Run \u0026amp; Standby for non-stop operation\u003c\/li\u003e\n\u003cli\u003eEnergy-efficient external-rotor EC motors\u003c\/li\u003e\n\u003cli\u003e0-10V speed control; IP65 terminal box\u003c\/li\u003e\n\u003cli\u003eFully-insulated AluZinc casing, low noise\u003c\/li\u003e\n\u003cli\u003eSuitable for external \/ roof installation as standard\u003c\/li\u003e\n\u003cli\u003eSafe and maintenance-free operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eApplications requiring non-interruptive (Run \u0026amp; Standby) ventilation\u003c\/li\u003e\n\u003cli\u003eCommercial supply or extract of clean or contaminated air\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eInstalls in any position, indoors or outdoors, on a three-phase (400V) supply. Connect to spiral duct using FK mounting clamps to prevent vibration transfer. Should be installed on a suitable circuit by a qualified electrician.\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKVK Duo 500 EC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwin Run \u0026amp; Standby duct fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500 mm circular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAirflow (max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6422 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExternal-rotor EC, three-phase (400V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCasing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluZinc, fully insulated; IP65 terminal box (IP54 motor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax air temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+60°C\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\/Systemair_KVK_Duo_500_EC_Twin_Duct_Fan_Single_Phase_-_500mm_datasheet.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSystemair KVK Duo 500 EC Datasheet\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_KVK_Duo_500_EC_Twin_Duct_Fan_Single_Phase_-_500mm_installation.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSystemair KVK Duo 500 EC Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47467195859265,"sku":"76835","price":4413.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/76835.jpg?v=1702586148"},{"product_id":"systemair-kvk-duo-630-ec-twin-duct-fan-three-phase-630mm","title":"Systemair KVK Duo 630 EC Twin Duct Fan Three Phase - 630mm","description":"\u003cp\u003eThe Systemair KVK Duo 630 EC is a twin Run \u0026amp; Standby duct fan with 630 mm circular connections, delivering up to 13154 m³\/h. Two fans share one fully-insulated casing so ventilation continues without interruption if one motor stops.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwin fan – Run \u0026amp; Standby for non-stop operation\u003c\/li\u003e\n\u003cli\u003eEnergy-efficient external-rotor EC motors\u003c\/li\u003e\n\u003cli\u003e0-10V speed control; IP65 terminal box\u003c\/li\u003e\n\u003cli\u003eFully-insulated AluZinc casing, low noise\u003c\/li\u003e\n\u003cli\u003eSuitable for external \/ roof installation as standard\u003c\/li\u003e\n\u003cli\u003eSafe and maintenance-free operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eApplications requiring non-interruptive (Run \u0026amp; Standby) ventilation\u003c\/li\u003e\n\u003cli\u003eCommercial supply or extract of clean or contaminated air\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eInstalls in any position, indoors or outdoors, on a three-phase (400V) supply. Connect to spiral duct using FK mounting clamps to prevent vibration transfer. Should be installed on a suitable circuit by a qualified electrician.\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKVK Duo 630 EC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwin Run \u0026amp; Standby duct fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e630 mm circular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAirflow (max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13154 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExternal-rotor EC, three-phase (400V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCasing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluZinc, fully insulated; IP65 terminal box (IP54 motor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax air temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+60°C\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\/Systemair_KVK_Duo_630_EC_Twin_Duct_Fan_Single_Phase_-_630mm_datasheet.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSystemair KVK Duo 630 EC Datasheet\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_KVK_Duo_630_EC_Twin_Duct_Fan_Single_Phase_-_630mm_installation.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSystemair KVK Duo 630 EC Installation Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47467239670081,"sku":"448246","price":5518.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/448246.jpg?v=1702587455"}],"url":"https:\/\/www.efans.co.uk\/collections\/twin-fans\/motor_ac.oembed","provider":"eFans Direct Ltd","version":"1.0","type":"link"}