{"product_id":"dayton-2ftu9-damper-vert-horiz-mtg-17-3-4-sq","title":"Dayton 2FTU9 - Damper,Vert\/Horiz Mtg,17 3\/4 Sq","description":"\u003cp\u003e17.75 In.H-W 4.5 In.L Alu Univ Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter 18 in, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2000 fpm, Overall Height 17 3\/4 in, Rough Opening Diameter 18 in, Rough Opening Shape Square, Fits Fan Diameter 18 in, For Duct Shape Square, Free Area 2.2 sq ft, Overall Width 17 3\/4 in, Frame Material Thickness 20 ga, Overall Length 4 1\/2 in, Frame Depth 2 in, Rough Opening Length 18 in, Maximum Pressure 1 in wc\u003c\/p\u003e","brand":"DAYTON","offers":[{"title":"Default Title","offer_id":43253238497374,"sku":"2FTU9","price":59.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Z-1IJxfo5oy.jpg?v=1788369856","url":"https:\/\/nationalboilersupply.com\/products\/dayton-2ftu9-damper-vert-horiz-mtg-17-3-4-sq","provider":"National Boiler Supply","version":"1.0","type":"link"}