{"product_id":"dayton-4hx72-damper-backdraft","title":"Dayton 4HX72 - Damper,Backdraft","description":"\u003cp\u003e10.75 In.H-W 4.5 In.L Aluminum Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 10 3\/4 in, Rough Opening Diameter Not Applicable, Rough Opening Shape Square, Fits Fan Diameter 8 in, For Duct Shape Square, Free Area 0.3 sq ft, Overall Width 10 3\/4 in, Frame Material Thickness 0.1 in, Overall Length 4 1\/2 in, Connection Type Not Applicable, Frame Depth 1 5\/8 in\u003c\/p\u003e","brand":"DAYTON","offers":[{"title":"Default Title","offer_id":43260037988446,"sku":"4HX72","price":42.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Z13Mvxfo5oy_6cb035db-b26a-463f-a31c-eceddedba259.jpg?v=1788441535","url":"https:\/\/nationalboilersupply.com\/products\/dayton-4hx72-damper-backdraft","provider":"National Boiler Supply","version":"1.0","type":"link"}