{"product_id":"5nkn9","title":"5NKN9 DAYTON Damper, Horizontal, 64 In Sq","description":"\u003cul\u003e \u003cli\u003e \u003cstrong\u003eDamper Application:\u003c\/strong\u003e Backdraft\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eFor Nominal Duct Diameter:\u003c\/strong\u003e 64 in\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eFrame Material:\u003c\/strong\u003e Galvanized Steel\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eNumber of Panels:\u003c\/strong\u003e 2\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eMaximum Air Velocity:\u003c\/strong\u003e 2000 fpm\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eOverall Height:\u003c\/strong\u003e 63 3\/4 in\u003c\/li\u003e \u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e \u003ctr\u003e \u003ctd\u003ePart Number\u003c\/td\u003e \u003ctd\u003e5NKN9\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eBrand\u003c\/td\u003e \u003ctd\u003eDAYTON\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eItem\u003c\/td\u003e \u003ctd\u003e63.75 In.H-W 4.5 In.L Aluminum Backdraft Dampr\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDamper Application\u003c\/td\u003e \u003ctd\u003eBackdraft\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFor Nominal Duct Diameter\u003c\/td\u003e \u003ctd\u003e64 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFrame Material\u003c\/td\u003e \u003ctd\u003eGalvanized Steel\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eNumber of Panels\u003c\/td\u003e \u003ctd\u003e2\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaximum Air Velocity\u003c\/td\u003e \u003ctd\u003e2000 fpm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eOverall Height\u003c\/td\u003e \u003ctd\u003e63 3\/4 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRough Opening Diameter\u003c\/td\u003e \u003ctd\u003e64 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRough Opening Shape\u003c\/td\u003e \u003ctd\u003eSquare\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFits Fan Diameter\u003c\/td\u003e \u003ctd\u003e60 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFor Duct Shape\u003c\/td\u003e \u003ctd\u003eSquare\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFree Area\u003c\/td\u003e \u003ctd\u003e29.5 sq ft\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eOverall Width\u003c\/td\u003e \u003ctd\u003e63 3\/4 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFrame Material Thickness\u003c\/td\u003e \u003ctd\u003e20 ga\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eOverall Length\u003c\/td\u003e \u003ctd\u003e4 1\/2 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFrame Depth\u003c\/td\u003e \u003ctd\u003e2 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRough Opening Length\u003c\/td\u003e \u003ctd\u003e64 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eUPC\u003c\/td\u003e \u003ctd\u003e190735347768\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eDAYTON 5NKN9 is a horizontal backdraft damper for square ducts with a nominal duct diameter of 64 in. It has a galvanized steel frame with a thickness of 20 ga, two panels, and a free area of 29.5 sq ft. The damper measures 63 3\/4 in high by 63 3\/4 in wide by 4 1\/2 in long, with a maximum air velocity of 2000 fpm.\u003c\/p\u003e\u003cp\u003eConfirm the part number against your existing unit or equipment before ordering to ensure correct fit.\u003c\/p\u003e","brand":"DAYTON","offers":[{"title":"Default Title","offer_id":67668696793301,"sku":"5NKN9","price":699.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0811\/9091\/2213\/files\/Z0369ufo5oy.jpg?v=1791296697","url":"https:\/\/proreplacementparts.com\/products\/5nkn9","provider":"Pro Replacement Parts","version":"1.0","type":"link"}