{"product_id":"volet-anti-retour-rond-galvanise","title":"Galvanized Round Backdraft Damper","description":"\u003cp\u003eThe \u003cstrong\u003egalvanized round backdraft damper\u003c\/strong\u003e installs in an \u003cstrong\u003eexhaust duct\u003c\/strong\u003e. It opens when the fan pushes air outside and closes as soon as the air stops. Its job: keep cold air, wind and odours from coming back down the duct and into the house.\u003c\/p\u003e\n\u003ch2\u003eCold coming back through the bathroom fan\u003c\/h2\u003e\n\u003cp\u003eA cold draft under the bathroom fan, frost in the duct, odours moving from one room to another: these symptoms often come from an exhaust duct with no backdraft protection. The flap on the \u003cstrong\u003ewall cap\u003c\/strong\u003e closes the outlet at the wall; the in-line damper adds a barrier inside, useful on wind-exposed walls and on systems where several ducts join the same fan.\u003c\/p\u003e\n\u003ch3\u003eFour diameters\u003c\/h3\u003e\n\u003cp\u003eAvailable in 4, 5, 6 and 8 in. Choose the nominal diameter of the exhaust duct, usually that of the fan collar.\u003c\/p\u003e\n\u003ch3\u003eInstalling it properly\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRespect the \u003cstrong\u003edirection of flow\u003c\/strong\u003e: the blade opens toward the outlet.\u003c\/li\u003e\n\u003cli\u003eCheck that the blade moves freely; a screw that is too long can jam it.\u003c\/li\u003e\n\u003cli\u003eSeal the joints with \u003cstrong\u003ealuminum tape\u003c\/strong\u003e or \u003cstrong\u003emastic\u003c\/strong\u003e, and insulate the duct in an attic.\u003c\/li\u003e\n\u003cli\u003eGive the duct a slight slope toward the outside so condensation drains out.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstalled by AirGreen across Greater Montréal\u003c\/h2\u003e\n\u003cp\u003eWe install exhaust ducts, dampers and wall caps in \u003cstrong\u003eMontréal\u003c\/strong\u003e, \u003cstrong\u003eLaval\u003c\/strong\u003e, \u003cstrong\u003eLongueuil\u003c\/strong\u003e, on the \u003cstrong\u003eSouth Shore\u003c\/strong\u003e and on the \u003cstrong\u003eNorth Shore\u003c\/strong\u003e. RBQ licence 5645-9605-01, subcategory 15.8 Ventilation. For availability or a quote, call us at \u003ca href=\"tel:+15143162973\"\u003e514 316-2973\u003c\/a\u003e or email \u003ca href=\"mailto:sales@airgreen.ca\"\u003esales@airgreen.ca\u003c\/a\u003e with the diameter and quantity.\u003c\/p\u003e","brand":"AirGreen","offers":[{"title":"4 in","offer_id":67638673277220,"sku":"AG-VC-01601","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"5 in","offer_id":67638673309988,"sku":"AG-VC-01602","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"6 in","offer_id":67638673342756,"sku":"AG-VC-01603","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"8 in","offer_id":67638673375524,"sku":"AG-VC-01604","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/AG-VC-016_00_principale.png?v=1791986548","url":"https:\/\/airgreen.ca\/en\/products\/volet-anti-retour-rond-galvanise","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}