{"product_id":"dayton-3hhn3-backdraft-damper-horizontal-47-3-4-sq","title":"Dayton 3HHN3 - Backdraft Damper,Horizontal,47-3\/4 Sq","description":"\u003cp\u003e47.75 In.H-W 4.5 In.L Aluminum Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter 48 in, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 47 3\/4 in, Rough Opening Diameter 48 in, Rough Opening Shape Square, Fits Fan Diameter 48 in, For Duct Shape Square, Free Area 14.7 sq ft, Overall Width 47 3\/4 in, Frame Material Thickness 20 ga, Overall Length 4 1\/2 in, Frame Depth 2 in, Rough Opening Length 48 in\u003c\/p\u003e","brand":"DAYTON","offers":[{"title":"Default Title","offer_id":43252828110942,"sku":"3HHN3","price":279.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Z0369ufo5oy.jpg?v=1788361583","url":"https:\/\/nationalboilersupply.com\/products\/dayton-3hhn3-backdraft-damper-horizontal-47-3-4-sq","provider":"National Boiler Supply","version":"1.0","type":"link"}