{"product_id":"dayton-4yn17-24-in-backdraft-damper-intake-shutter-25-in-x-25-in-mill-finish-aluminium","title":"Dayton 4YN17 - 24 in Backdraft Damper \/ Intake Shutter, 25 in x 25 in, Mill finish aluminium","description":"\u003cp\u003e26.75 In.H-W 4.5 In.L Alu Intake Shutter Dampr, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 26 3\/4 in, Rough Opening Diameter 25 in, Rough Opening Shape Square, Fits Fan Diameter 24 in, For Duct Shape Not Applicable, Free Area 3.2 sq ft, Overall Width 26 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, Rough Opening Length 25 in\u003c\/p\u003e","brand":"DAYTON","offers":[{"title":"Default Title","offer_id":43257965150302,"sku":"4YN17","price":204.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Z1KCp_fo5oy.jpg?v=1788415217","url":"https:\/\/nationalboilersupply.com\/products\/dayton-4yn17-24-in-backdraft-damper-intake-shutter-25-in-x-25-in-mill-finish-aluminium","provider":"National Boiler Supply","version":"1.0","type":"link"}