{"product_id":"dayton-20ua31-louver-damper-adjustable-54-h-x-54-w","title":"Dayton 20UA31 - Louver Damper,Adjustable,54 H x 54 W","description":"\u003cp\u003e57 In.H 57 In.W Drnbl Extrd Alu Combo Dmpr, Louver Type Combination, Frame Type Flanged, Outside Height 53 1\/2 in, Outside Width 53 1\/2 in, Rough Opening Height 54 in, Rough Opening Width 54 in, Louver Maximum Intake 10,221 cfm, Maximum Exhaust 14,616 cfm, Flange Width 1 1\/2 in, Free Area 9.1 sq ft, Beginning Point of Water Penetration 1,118 fpm, Maximum Air Velocity 3000 fpm, Blade Angle 45 Degrees , Material Aluminum, Inside Height 52 1\/2 in, Inside Width 51 3\/4 in, Number of Blades 11\u003c\/p\u003e","brand":"DAYTON","offers":[{"title":"Default Title","offer_id":43254977953886,"sku":"20UA31","price":2156.01,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Z-oJytocpEx_5f9f7288-b5bd-4bc9-9bc4-ad93d0a25c01.jpg?v=1788398792","url":"https:\/\/nationalboilersupply.com\/products\/dayton-20ua31-louver-damper-adjustable-54-h-x-54-w","provider":"National Boiler Supply","version":"1.0","type":"link"}