{"title":"Ducting Silencers","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\u003eDuct silencers, also called duct attenuators, fit inline in ventilation ductwork to cut the fan and airflow noise carried along the duct to occupied rooms. We stock Systemair LDC circular silencers for spiral ducting from 100mm to 500mm diameter in lengths from 300mm to 1200mm, and Systemair LDR rectangular silencers from 300 x 150mm to 1000 x 500mm, 950mm long with a universal flange for PG or Metu profile connections. Use the buttons below to filter by duct type, or for help choosing the right silencer, 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 duct silencer?\u003c\/h3\u003e\n\u003cp\u003eA duct silencer is a section of ductwork lined with sound absorbing insulation. Air passes straight through while the lining absorbs noise from the fan and the airflow, so less noise reaches the rooms the duct serves.\u003c\/p\u003e\n\n\u003ch3\u003eCircular or rectangular?\u003c\/h3\u003e\n\u003cp\u003eMatch the silencer to your ductwork. LDC circular silencers connect straight into round spiral ducting. LDR rectangular silencers are for rectangular duct runs and fit directly before or after Systemair KE, KT, RS and RSI rectangular duct fans.\u003c\/p\u003e\n\n\u003ch3\u003eWhich length do I need?\u003c\/h3\u003e\n\u003cp\u003eA longer silencer gives more noise reduction. The LDC range comes in 300mm, 600mm, 900mm and 1200mm lengths depending on diameter. Where a large reduction is needed, two silencers can be fitted in series. The datasheet on each product page shows the noise reduction at each frequency.\u003c\/p\u003e\n\n\u003ch3\u003eWhere should a duct silencer be fitted?\u003c\/h3\u003e\n\u003cp\u003eFor the best result, fit it immediately after the fan or after a bend, so noise is absorbed before it travels along the duct. On supply and extract systems, fit one on each side of the fan if both runs serve occupied rooms.\u003c\/p\u003e\n\n\u003ch3\u003eWill a silencer reduce airflow?\u003c\/h3\u003e\n\u003cp\u003eA silencer adds some resistance to the system, so allow for it when sizing the fan. The pressure drop at different airflows is shown on each product datasheet.\u003c\/p\u003e\n\n\u003ch3\u003eDo you supply silencers for projects?\u003c\/h3\u003e\n\u003cp\u003eYes. We supply M\u0026amp;E contractors, ventilation installers and facilities teams. Send us the duct sizes or a schedule and we will quote: 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\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdiv id=\"efans-subnav\"\u003e\n\u003ca rel=\"nofollow\" data-tag=\"type_circular\" href=\"\/collections\/ducting-silencers\/type_circular\"\u003eCircular\u003c\/a\u003e\n\u003ca rel=\"nofollow\" data-tag=\"type_rectangular\" href=\"\/collections\/ducting-silencers\/type_rectangular\"\u003eRectangular\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cscript\u003e\n(function(){var n=document.getElementById('efans-subnav');if(!n)return;var base='\/collections\/ducting-silencers';\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 duct silencer?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A duct silencer is a section of ductwork lined with sound absorbing insulation. Air passes straight through while the lining absorbs noise from the fan and the airflow, so less noise reaches the rooms the duct serves.\"}}, {\"@type\": \"Question\", \"name\": \"Circular or rectangular?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Match the silencer to your ductwork. LDC circular silencers connect straight into round spiral ducting. LDR rectangular silencers are for rectangular duct runs and fit directly before or after Systemair KE, KT, RS and RSI rectangular duct fans.\"}}, {\"@type\": \"Question\", \"name\": \"Which length do I need?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A longer silencer gives more noise reduction. The LDC range comes in 300mm, 600mm, 900mm and 1200mm lengths depending on diameter. Where a large reduction is needed, two silencers can be fitted in series. The datasheet on each product page shows the noise reduction at each frequency.\"}}, {\"@type\": \"Question\", \"name\": \"Where should a duct silencer be fitted?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For the best result, fit it immediately after the fan or after a bend, so noise is absorbed before it travels along the duct. On supply and extract systems, fit one on each side of the fan if both runs serve occupied rooms.\"}}, {\"@type\": \"Question\", \"name\": \"Will a silencer reduce airflow?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A silencer adds some resistance to the system, so allow for it when sizing the fan. The pressure drop at different airflows is shown on each product datasheet.\"}}, {\"@type\": \"Question\", \"name\": \"Do you supply silencers for projects?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. We supply M\u0026E contractors, ventilation installers and facilities teams. Send us the duct sizes or a schedule and we will quote: email hello@efans.co.uk or call 0161 399 3825.\"}}]}\n\u003c\/script\u003e\n","products":[{"product_id":"systemair-ldc-circular-silencer-500mm-dia-x-900mm-long","title":"Systemair LDC Circular Silencer 500mm Dia x 900mm Long","description":"\u003cp\u003eThe Systemair LDC 500mm circular duct silencer is 900mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e500mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e900mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_500-900_Silencer.pdf\" title=\"Systemair LDC 500mm Dia x 900mm Silencer Datasheet\"\u003eSystemair LDC 500mm Dia x 900mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":33314521022597,"sku":"450281","price":860.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_d60e8935-ff1e-42ec-8747-6246e3a2919d.webp?v=1697012221"},{"product_id":"systemair-ldc-circular-silencer-355mm-dia-x-900mm-long","title":"Systemair LDC Circular Silencer 355mm Dia x 900mm Long","description":"\u003cp\u003eThe Systemair LDC 355mm circular duct silencer is 900mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e355mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e355mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e900mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_355-900_Silencer.pdf\" title=\"Systemair LDC 355mm Dia x 900mm Silencer Datasheet\"\u003eSystemair LDC 355mm Dia x 900mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":35035179483292,"sku":"5399","price":355.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_8cb15f4c-5d12-4399-bc51-f2eee035f793.webp?v=1697012202"},{"product_id":"systemair-ldc-circular-silencer-400mm-dia-x-900mm-long","title":"Systemair LDC Circular Silencer 400mm Dia x 900mm Long","description":"\u003cp\u003eThe Systemair LDC 400mm circular duct silencer is 900mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e400mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e900mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_400-900_Silencer.pdf\" title=\"Systemair LDC 400mm Dia x 900mm Silencer Datasheet\"\u003eSystemair LDC 400mm Dia x 900mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":35035205337244,"sku":"5198","price":431.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_56684114-236d-461b-a2bb-33640617cc53.webp?v=1697012212"},{"product_id":"systemair-ldc-circular-silencer-100mm-dia-x-300mm-long","title":"Systemair LDC Circular Silencer 100mm Dia x 300mm Long","description":"\u003cp\u003eThe Systemair LDC 100mm circular duct silencer is 300mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e100mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_100-300_Silencer.pdf\" title=\"Systemair LDC 100mm Dia x 300mm Silencer Datasheet\"\u003eSystemair LDC 100mm Dia x 300mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453224866113,"sku":"8180","price":71.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_453b9a7c-b868-4ca1-8811-39a53ad55c08.webp?v=1697012237"},{"product_id":"systemair-ldc-circular-silencer-100mm-dia-x-600mm-long","title":"Systemair LDC Circular Silencer 100mm Dia x 600mm Long","description":"\u003cp\u003eThe Systemair LDC 100mm circular duct silencer is 600mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e100mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_100-600_Silencer.pdf\" title=\"Systemair LDC 100mm Dia x 600mm Silencer Datasheet\"\u003eSystemair LDC 100mm Dia x 600mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453226275137,"sku":"5188","price":82.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_3126b8dc-c972-49ec-ae83-f81681cdb127.webp?v=1697012235"},{"product_id":"systemair-ldc-circular-silencer-100mm-dia-x-900mm-long","title":"Systemair LDC Circular Silencer 100mm Dia x 900mm Long","description":"\u003cp\u003eThe Systemair LDC 100mm circular duct silencer is 900mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e100mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e900mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_100-900_Silencer.pdf\" title=\"Systemair LDC 100mm Dia x 900mm Silencer Datasheet\"\u003eSystemair LDC 100mm Dia x 900mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453234794817,"sku":"5189","price":109.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_6f5653bd-73e5-4bf9-9830-686044ce1739.webp?v=1697012232"},{"product_id":"systemair-ldc-circular-silencer-100mm-dia-x-1200mm-long","title":"Systemair LDC Circular Silencer 100mm Dia x 1200mm Long","description":"\u003cp\u003eThe Systemair LDC 100mm circular duct silencer is 1200mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e100mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_100-1200_Silencer.pdf\" title=\"Systemair LDC 100mm Dia x 1200mm Silencer Datasheet\"\u003eSystemair LDC 100mm Dia x 1200mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453235810625,"sku":"5996","price":132.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC.webp?v=1697011725"},{"product_id":"systemair-ldc-circular-silencer-150mm-dia-x-300mm-long","title":"Systemair LDC Circular Silencer 150mm Dia x 300mm Long","description":"\u003cp\u003eThe Systemair LDC 150mm circular duct silencer is 300mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e150mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_150-300_Silencer.pdf\" title=\"Systemair LDC 150mm Dia x 300mm Silencer Datasheet\"\u003eSystemair LDC 150mm Dia x 300mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453236924737,"sku":"53723","price":94.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_99f7fe95-b000-43d9-a7f0-d23fe87427c8.webp?v=1697012064"},{"product_id":"systemair-ldc-circular-silencer-150mm-dia-x-600mm-long","title":"Systemair LDC Circular Silencer 150mm Dia x 600mm Long","description":"\u003cp\u003eThe Systemair LDC 150mm circular duct silencer is 600mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e150mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_150-600_Silencer.pdf\" title=\"Systemair LDC 150mm Dia x 600mm Silencer Datasheet\"\u003eSystemair LDC 150mm Dia x 600mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453238268225,"sku":"5199","price":110.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_841a7098-8efb-4bed-88d8-eae139691969.webp?v=1697012073"},{"product_id":"systemair-ldc-circular-silencer-125mm-dia-x-300mm-long","title":"Systemair LDC Circular Silencer 125mm Dia x 300mm Long","description":"\u003cp\u003eThe Systemair LDC 125mm circular duct silencer is 300mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e125mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_125-300_Silencer.pdf\" title=\"Systemair LDC 125mm Dia x 300mm Silencer Datasheet\"\u003eSystemair LDC 125mm Dia x 300mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453242593601,"sku":"53722","price":79.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_cbd8e9b1-f4ff-4dbd-83c1-90117f229ca3.webp?v=1697012227"},{"product_id":"systemair-ldc-circular-silencer-125mm-dia-x-600mm-long","title":"Systemair LDC Circular Silencer 125mm Dia x 600mm Long","description":"\u003cp\u003eThe Systemair LDC 125mm circular duct silencer is 600mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e125mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_125-600_Silencer.pdf\" title=\"Systemair LDC 125mm Dia x 600mm Silencer Datasheet\"\u003eSystemair LDC 125mm Dia x 600mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453248065857,"sku":"5190","price":81.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_02c6bf46-0f0e-435e-a3c7-e5a0ac1dbb27.webp?v=1697012044"},{"product_id":"systemair-ldc-circular-silencer-125mm-dia-x-900mm-long","title":"Systemair LDC Circular Silencer 125mm Dia x 900mm Long","description":"\u003cp\u003eThe Systemair LDC 125mm circular duct silencer is 900mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e125mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e900mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_125-900_Silencer.pdf\" title=\"Systemair LDC 125mm Dia x 900mm Silencer Datasheet\"\u003eSystemair LDC 125mm Dia x 900mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453254291777,"sku":"5191","price":113.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_d936cf7e-f031-4eaf-a78d-a498c8521f01.webp?v=1697012054"},{"product_id":"systemair-ldc-circular-silencer-125mm-dia-x-1200mm-long","title":"Systemair LDC Circular Silencer 125mm Dia x 1200mm Long","description":"\u003cp\u003eThe Systemair LDC 125mm circular duct silencer is 1200mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e125mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_125-1200_Silencer.pdf\" title=\"Systemair LDC 125mm Dia x 1200mm Silencer Datasheet\"\u003eSystemair LDC 125mm Dia x 1200mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453262549313,"sku":"5997","price":134.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_1bbb8c47-4220-4ece-a882-a6fee1732489.webp?v=1697012229"},{"product_id":"systemair-ldc-circular-silencer-200mm-dia-x-300mm-long","title":"Systemair LDC Circular Silencer 200mm Dia x 300mm Long","description":"\u003cp\u003eThe Systemair LDC 200mm circular duct silencer is 300mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e200mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_200-300_Silencer.pdf\" title=\"Systemair LDC 200mm Dia x 300mm Silencer Datasheet\"\u003eSystemair LDC 200mm Dia x 300mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453295382849,"sku":"53369","price":99.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_9ed7a086-2b1e-4adc-bf86-c79d0874e4fb.webp?v=1697012095"},{"product_id":"systemair-ldc-circular-silencer-200mm-dia-x-600mm-long","title":"Systemair LDC Circular Silencer 200mm Dia x 600mm Long","description":"\u003cp\u003eThe Systemair LDC 200mm circular duct silencer is 600mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e200mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_200-600_Silencer.pdf\" title=\"Systemair LDC 200mm Dia x 600mm Silencer Datasheet\"\u003eSystemair LDC 200mm Dia x 600mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453300560193,"sku":"5194","price":113.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_26301017-ec72-473d-868a-98c61f0d3d50.webp?v=1697012104"},{"product_id":"systemair-ldc-circular-silencer-200mm-dia-x-900mm-long","title":"Systemair LDC Circular Silencer 200mm Dia x 900mm Long","description":"\u003cp\u003eThe Systemair LDC 200mm circular duct silencer is 900mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e200mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e900mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_200-900_Silencer.pdf\" title=\"Systemair LDC 200mm Dia x 900mm Silencer Datasheet\"\u003eSystemair LDC 200mm Dia x 900mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453325234497,"sku":"5195","price":149.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_412371ea-9dd8-468e-937f-bcf2efce7209.webp?v=1697012244"},{"product_id":"systemair-ldc-circular-silencer-250mm-dia-x-300mm-long","title":"Systemair LDC Circular Silencer 250mm Dia x 300mm Long","description":"\u003cp\u003eThe Systemair LDC 250mm circular duct silencer is 300mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e250mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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":"Systemair","offers":[{"title":"Default Title","offer_id":46453390639425,"sku":"53724","price":151.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/Systemair_LDC_Circular_Silencer_250mm_Dia_x_300mm_Long.webp?v=1737572129"},{"product_id":"systemair-ldc-circular-silencer-250mm-dia-x-600mm-long","title":"Systemair LDC Circular Silencer 250mm Dia x 600mm Long","description":"\u003cp\u003eThe Systemair LDC 250mm circular duct silencer is 600mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e250mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_250-600_Silencer.pdf\" title=\"Systemair LDC 250mm Dia x 600mm Silencer Datasheet\"\u003eSystemair LDC 250mm Dia x 600mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453551759681,"sku":"51200","price":166.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_7e3b1d42-c065-40c4-bb1b-d51b7562a0e0.webp?v=1697012163"},{"product_id":"systemair-ldc-circular-silencer-250mm-dia-x-900mm-long","title":"Systemair LDC Circular Silencer 250mm Dia x 900mm Long","description":"\u003cp\u003eThe Systemair LDC 250mm circular duct silencer is 900mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e250mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e900mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_250-900_Silencer.pdf\" title=\"Systemair LDC 250mm Dia x 900mm Silencer Datasheet\"\u003eSystemair LDC 250mm Dia x 900mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453693055297,"sku":"5196","price":187.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_6c502a57-8f27-47f3-adbb-fb67b9858809.webp?v=1697012174"},{"product_id":"systemair-ldc-circular-silencer-315mm-dia-x-600mm-long","title":"Systemair LDC Circular Silencer 315mm Dia x 600mm Long","description":"\u003cp\u003eThe Systemair LDC 315mm circular duct silencer is 600mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e315mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e315mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_315-600_Silencer.pdf\" title=\"Systemair LDC 315mm Dia x 600mm Silencer Datasheet\"\u003eSystemair LDC 315mm Dia x 600mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453764653377,"sku":"5949","price":178.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_483baa46-602c-481e-a3e4-f1cdeb2d9f95.webp?v=1697012240"},{"product_id":"systemair-ldc-circular-silencer-315mm-dia-x-900mm-long","title":"Systemair LDC Circular Silencer 315mm Dia x 900mm Long","description":"\u003cp\u003eThe Systemair LDC 315mm circular duct silencer is 900mm long and reduces noise carried along circular spiral ducting. It fits ducting that complies with the spiral duct standard for a quick connection.\u003c\/p\u003e\u003cp\u003eFor the best result, fit it immediately after a fan or bend. Two silencers can be used in series where a particularly strong reduction is needed. The unit has 50mm acoustic insulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e315mm dia\u003c\/li\u003e\n\u003cli\u003eCircular duct silencer\u003c\/li\u003e\n\u003cli\u003e50mm insulation\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e315mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e900mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpiral duct standard\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\/Systemair_LDC_315-900_Silencer.pdf\" title=\"Systemair LDC 315mm Dia x 900mm Silencer Datasheet\"\u003eSystemair LDC 315mm Dia x 900mm Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":46453807022401,"sku":"5197","price":279.91,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDC_e1b986be-de14-4bf9-a0e0-11c39f0fc077.webp?v=1697012193"},{"product_id":"systemair-ldr-30-15-rectangular-silencer-300-x-150-x-950","title":"Systemair LDR 30-15 Rectangular Silencer 300 x 150 x 950","description":"\u003cp\u003eThe Systemair LDR 300 x 150 x 950mm rectangular duct silencer suppresses noise transmitted along rectangular ducting. It fits immediately before or after Systemair KE, KT, RS and RSI rectangular duct fans.\u003c\/p\u003e\u003cp\u003eIt is supplied with a universal flange suitable for a PG flange or Metu profile. For noise reduction in both the duct and the surroundings, use it together with an insulated fan.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e300 x 150 x 950mm\u003c\/li\u003e\n\u003cli\u003eRectangular duct silencer\u003c\/li\u003e\n\u003cli\u003eUniversal PG\/Metu flange\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRectangular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (W x H x L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300 x 150 x 950mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUniversal (PG flange or Metu profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable fans\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKE, KT, RS, RSI rectangular duct fans\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\/Systemair_LDR_30-15_Silencer.pdf\" title=\"Systemair LDR Rectangular Silencer Datasheet\"\u003eSystemair LDR Rectangular Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47023842361665,"sku":"5068","price":207.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDR_001_2e6321cb-e9b0-4fe7-b405-4ae5fb049dae.jpg?v=1697008120"},{"product_id":"systemair-ldr-40-20-rectangular-silencer-400x200x950mm","title":"Systemair LDR 40-20 Rectangular Silencer 400x200x950mm","description":"\u003cp\u003eThe Systemair LDR 400 x 200 x 950mm rectangular duct silencer suppresses noise transmitted along rectangular ducting. It fits immediately before or after Systemair KE, KT, RS and RSI rectangular duct fans.\u003c\/p\u003e\u003cp\u003eIt is supplied with a universal flange suitable for a PG flange or Metu profile. For noise reduction in both the duct and the surroundings, use it together with an insulated fan.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e400 x 200 x 950mm\u003c\/li\u003e\n\u003cli\u003eRectangular duct silencer\u003c\/li\u003e\n\u003cli\u003eUniversal PG\/Metu flange\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRectangular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (W x H x L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400 x 200 x 950mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUniversal (PG flange or Metu profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable fans\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKE, KT, RS, RSI rectangular duct fans\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\/Systemair_LDR_30-15_Silencer.pdf\" title=\"Systemair LDR Rectangular Silencer Datasheet\"\u003eSystemair LDR Rectangular Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47023901835585,"sku":"5069","price":246.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDR_001_8b0eb75d-7847-4e32-b96f-80716c5378fa.jpg?v=1697008602"},{"product_id":"systemair-ldr-50-25-rectangular-silencer-500-x-250-x-950","title":"Systemair LDR 50-25 Rectangular Silencer 500 x 250 x 950","description":"\u003cp\u003eThe Systemair LDR 500 x 250 x 950mm rectangular duct silencer suppresses noise transmitted along rectangular ducting. It fits immediately before or after Systemair KE, KT, RS and RSI rectangular duct fans.\u003c\/p\u003e\u003cp\u003eIt is supplied with a universal flange suitable for a PG flange or Metu profile. For noise reduction in both the duct and the surroundings, use it together with an insulated fan.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e500 x 250 x 950mm\u003c\/li\u003e\n\u003cli\u003eRectangular duct silencer\u003c\/li\u003e\n\u003cli\u003eUniversal PG\/Metu flange\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRectangular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (W x H x L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500 x 250 x 950mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUniversal (PG flange or Metu profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable fans\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKE, KT, RS, RSI rectangular duct fans\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\/Systemair_LDR_30-15_Silencer.pdf\" title=\"Systemair LDR Rectangular Silencer Datasheet\"\u003eSystemair LDR Rectangular Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47023956656449,"sku":"5070","price":326.38,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDR_001_e9e27c7f-2975-4c58-bcdb-751c64ff146c.jpg?v=1697009000"},{"product_id":"systemair-ldr-50-30-rectangular-silencer-500-x-300-x-950","title":"Systemair LDR 50-30 Rectangular Silencer 500 x 300 x 950","description":"\u003cp\u003eThe Systemair LDR 500 x 300 x 950mm rectangular duct silencer suppresses noise transmitted along rectangular ducting. It fits immediately before or after Systemair KE, KT, RS and RSI rectangular duct fans.\u003c\/p\u003e\u003cp\u003eIt is supplied with a universal flange suitable for a PG flange or Metu profile. For noise reduction in both the duct and the surroundings, use it together with an insulated fan.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e500 x 300 x 950mm\u003c\/li\u003e\n\u003cli\u003eRectangular duct silencer\u003c\/li\u003e\n\u003cli\u003eUniversal PG\/Metu flange\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRectangular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (W x H x L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500 x 300 x 950mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUniversal (PG flange or Metu profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable fans\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKE, KT, RS, RSI rectangular duct fans\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\/Systemair_LDR_30-15_Silencer.pdf\" title=\"Systemair LDR Rectangular Silencer Datasheet\"\u003eSystemair LDR Rectangular Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47024003350849,"sku":"5071","price":329.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDR_001_d3ac90f2-4fa2-4d60-ad15-f724877e8bbe.jpg?v=1697009293"},{"product_id":"systemair-ldr-60-30-rectangular-silencer-600mm-x-300mm-length-950mm","title":"Systemair LDR 60-30 Rectangular Silencer 600mm x 300mm (Length 950mm)","description":"\u003cp\u003eThe Systemair LDR 600 x 300 x 950mm rectangular duct silencer suppresses noise transmitted along rectangular ducting. It fits immediately before or after Systemair KE, KT, RS and RSI rectangular duct fans.\u003c\/p\u003e\u003cp\u003eIt is supplied with a universal flange suitable for a PG flange or Metu profile. For noise reduction in both the duct and the surroundings, use it together with an insulated fan.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e600 x 300 x 950mm\u003c\/li\u003e\n\u003cli\u003eRectangular duct silencer\u003c\/li\u003e\n\u003cli\u003eUniversal PG\/Metu flange\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRectangular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (W x H x L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600 x 300 x 950mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUniversal (PG flange or Metu profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable fans\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKE, KT, RS, RSI rectangular duct fans\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\/Systemair_LDR_30-15_Silencer.pdf\" title=\"Systemair LDR Rectangular Silencer Datasheet\"\u003eSystemair LDR Rectangular Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47024038183233,"sku":"5072","price":364.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDR_001_5d63917a-5d97-4d67-b30e-edd2746f9090.jpg?v=1697009536"},{"product_id":"systemair-ldr-60-35-rectangular-silencer-600-x-350-x-950","title":"Systemair LDR 60-35 Rectangular Silencer 600 x 350 x 950","description":"\u003cp\u003eThe Systemair LDR 600 x 350 x 950mm rectangular duct silencer suppresses noise transmitted along rectangular ducting. It fits immediately before or after Systemair KE, KT, RS and RSI rectangular duct fans.\u003c\/p\u003e\u003cp\u003eIt is supplied with a universal flange suitable for a PG flange or Metu profile. For noise reduction in both the duct and the surroundings, use it together with an insulated fan.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e600 x 350 x 950mm\u003c\/li\u003e\n\u003cli\u003eRectangular duct silencer\u003c\/li\u003e\n\u003cli\u003eUniversal PG\/Metu flange\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRectangular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (W x H x L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600 x 350 x 950mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUniversal (PG flange or Metu profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable fans\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKE, KT, RS, RSI rectangular duct fans\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\/Systemair_LDR_30-15_Silencer.pdf\" title=\"Systemair LDR Rectangular Silencer Datasheet\"\u003eSystemair LDR Rectangular Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47024077013313,"sku":"5073","price":379.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDR_001_327edcd3-6640-4c71-b569-9f610685beb9.jpg?v=1697009782"},{"product_id":"systemair-ldr-70-40-rectangular-silencer-700-x-400-x-950","title":"Systemair LDR 70-40 Rectangular Silencer 700 x 400 x 950","description":"\u003cp\u003eThe Systemair LDR 700 x 400 x 950mm rectangular duct silencer suppresses noise transmitted along rectangular ducting. It fits immediately before or after Systemair KE, KT, RS and RSI rectangular duct fans.\u003c\/p\u003e\u003cp\u003eIt is supplied with a universal flange suitable for a PG flange or Metu profile. For noise reduction in both the duct and the surroundings, use it together with an insulated fan.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e700 x 400 x 950mm\u003c\/li\u003e\n\u003cli\u003eRectangular duct silencer\u003c\/li\u003e\n\u003cli\u003eUniversal PG\/Metu flange\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRectangular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (W x H x L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e700 x 400 x 950mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUniversal (PG flange or Metu profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable fans\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKE, KT, RS, RSI rectangular duct fans\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\/Systemair_LDR_30-15_Silencer.pdf\" title=\"Systemair LDR Rectangular Silencer Datasheet\"\u003eSystemair LDR Rectangular Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47024106635585,"sku":"5074","price":479.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDR_001_87abd5f8-8ca3-4edc-bd21-af7c7facb327.jpg?v=1697010004"},{"product_id":"systemair-ldr-80-50-rectangular-silencer-800-x-500-x-950","title":"Systemair LDR 80-50 Rectangular Silencer 800 x 500 x 950","description":"\u003cp\u003eThe Systemair LDR 800 x 500 x 950mm rectangular duct silencer suppresses noise transmitted along rectangular ducting. It fits immediately before or after Systemair KE, KT, RS and RSI rectangular duct fans.\u003c\/p\u003e\u003cp\u003eIt is supplied with a universal flange suitable for a PG flange or Metu profile. For noise reduction in both the duct and the surroundings, use it together with an insulated fan.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e800 x 500 x 950mm\u003c\/li\u003e\n\u003cli\u003eRectangular duct silencer\u003c\/li\u003e\n\u003cli\u003eUniversal PG\/Metu flange\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRectangular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (W x H x L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e800 x 500 x 950mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUniversal (PG flange or Metu profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable fans\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKE, KT, RS, RSI rectangular duct fans\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\/Systemair_LDR_30-15_Silencer.pdf\" title=\"Systemair LDR Rectangular Silencer Datasheet\"\u003eSystemair LDR Rectangular Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47024156803393,"sku":"5075","price":564.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDR_001_f955e1f9-e97e-4a47-966f-16f14fc9e4c3.jpg?v=1697010293"},{"product_id":"systemair-ldr-100-50-rectangular-silencer-1000-x-500-x-950","title":"Systemair LDR 100-50 Rectangular Silencer 1000 x 500 x 950","description":"\u003cp\u003eThe Systemair LDR 1000 x 500 x 950mm rectangular duct silencer suppresses noise transmitted along rectangular ducting. It fits immediately before or after Systemair KE, KT, RS and RSI rectangular duct fans.\u003c\/p\u003e\u003cp\u003eIt is supplied with a universal flange suitable for a PG flange or Metu profile. For noise reduction in both the duct and the surroundings, use it together with an insulated fan.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1000 x 500 x 950mm\u003c\/li\u003e\n\u003cli\u003eRectangular duct silencer\u003c\/li\u003e\n\u003cli\u003eUniversal PG\/Metu flange\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\u003eSystemair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRectangular duct silencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (W x H x L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1000 x 500 x 950mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUniversal (PG flange or Metu profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable fans\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKE, KT, RS, RSI rectangular duct fans\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\/Systemair_LDR_30-15_Silencer.pdf\" title=\"Systemair LDR Rectangular Silencer Datasheet\"\u003eSystemair LDR Rectangular Silencer Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Systemair","offers":[{"title":"Default Title","offer_id":47024226697537,"sku":"5067","price":670.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/LDR_001_b9dc0729-7d8e-4cca-92e9-6b49db88e500.jpg?v=1697010672"}],"url":"https:\/\/www.efans.co.uk\/collections\/ducting-silencers\/type_rectangular.oembed","provider":"eFans Direct Ltd","version":"1.0","type":"link"}