{"product_id":"ac-infinity-backdraft-damper-ducting-insert-8-inch-black-galvanized-steel","title":"AC Infinity 8-Inch Backdraft Damper Duct Insert","description":"\u003cp\u003eThe \u003cstrong\u003eAC Infinity AC-BDD8-B\u003c\/strong\u003e is a one-way airflow valve designed for installation inside 8-inch flexible or rigid ducting. Its powder-coated galvanised steel body features dual outer rubber gaskets that grip duct walls to create a snug, airtight friction seal.\u003c\/p\u003e\n\u003cp\u003eInside the 7.08-inch steel body, lightweight aluminium butterfly blades are supported by a spring-loaded hinge mechanism. The blades open with minimal static pressure from high-volume inline exhaust fans, commercial range hoods or whole-house ventilation systems, then close when airflow stops to help prevent cold-air infiltration and external draft backflow.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-capacity 8-inch airflow:\u003c\/strong\u003e Suitable for higher-volume ventilation in large grow rooms, 4 × 8 ft tents, commercial kitchens and HVAC main runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended 7.08-inch housing:\u003c\/strong\u003e Provides space for the larger spring-loaded butterfly blades.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGalvanised steel body and aluminium blades:\u003c\/strong\u003e Durable metal construction designed to withstand heat, air velocity and continuous moisture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual outer rubber gaskets:\u003c\/strong\u003e Help hold the damper securely inside 8-inch rigid or flexible ducting without external screws or metal clamps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorizontal or vertical installation:\u003c\/strong\u003e Suitable for a range of duct layouts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eTechnical parameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand \/ manufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC Infinity Inc.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBackdraft Damper, 8-Inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC-BDD8-B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUPC barcode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e819137021327\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct opening size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 in (20.3 cm) diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.08 in (18.0 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBody material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGalvanised steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShutter \/ blade material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminium, spring-loaded butterfly type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSealing system\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual outer rubber friction gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExterior finish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack powder-coated finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrientation compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHorizontal or vertical mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eReal-World Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial kitchen range hoods and HVAC mains:\u003c\/strong\u003e Helps prevent cold outdoor air from leaking back through large 8-inch exhaust flues and central air lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge indoor cultivation exhaust lines:\u003c\/strong\u003e Helps reduce odour leakage and outdoor draft backflow through 8-inch grow-room exhaust ports when high-CFM fans cycle off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial tumble dryer and utility venting:\u003c\/strong\u003e Helps prevent wind gusts, backdrafts and pests from entering large-capacity dryer ventilation systems.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LED GROW SHOP UK","offers":[{"title":"Default Title","offer_id":58452931903819,"sku":"AC-BDD8-B","price":23.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1034\/8101\/6651\/files\/StorePhoto1__81689.jpg?v=1789212154","url":"https:\/\/florifi.co.uk\/products\/ac-infinity-backdraft-damper-ducting-insert-8-inch-black-galvanized-steel","provider":"Florifi","version":"1.0","type":"link"}