{"product_id":"4fzj9","title":"4FZJ9 DAYTON 30 in 33\" H-W 5 1\/4\" L SS Backdraft Dampr, 30-1\/2 in x 30-1\/2 in, Stainless Steel","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 Not Applicable\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eFrame Material:\u003c\/strong\u003e Stainless 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 2500 fpm\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eOverall Height:\u003c\/strong\u003e 33 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\u003e4FZJ9\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\u003e33 In.H-W 5 1\/4 In.L SS 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\u003eNot Applicable\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFrame Material\u003c\/td\u003e \u003ctd\u003eStainless 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\u003e2500 fpm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eOverall Height\u003c\/td\u003e \u003ctd\u003e33 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRough Opening Diameter\u003c\/td\u003e \u003ctd\u003e30 1\/2 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\u003e30 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFor Duct Shape\u003c\/td\u003e \u003ctd\u003eNot Applicable\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFree Area\u003c\/td\u003e \u003ctd\u003e5.4 sq ft\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eOverall Width\u003c\/td\u003e \u003ctd\u003e33 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFrame Material Thickness\u003c\/td\u003e \u003ctd\u003e0 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eOverall Length\u003c\/td\u003e \u003ctd\u003e5 1\/4 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eConnection Type\u003c\/td\u003e \u003ctd\u003eNot Applicable\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\u003eUPC\u003c\/td\u003e \u003ctd\u003e190735324509\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe DAYTON 4FZJ9 is a stainless steel backdraft damper for ventilation applications. It has two panels, a square rough opening of 30-1\/2 in, and fits a fan diameter of 30 in. Overall dimensions are 33 in high, 33 in wide, and 5-1\/4 in long, with a maximum air velocity of 2500 fpm and a free area of 5.4 sq ft.\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":67670528229589,"sku":"4FZJ9","price":622.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0811\/9091\/2213\/files\/Z11O5-fo5oy_b13b6ece-0217-4349-b86c-7ab4e5f9333f.jpg?v=1791315965","url":"https:\/\/proreplacementparts.com\/products\/4fzj9","provider":"Pro Replacement Parts","version":"1.0","type":"link"}