{"product_id":"4fzj1","title":"4FZJ1 DAYTON 42 in 45\" H-W 6.5\" L Extrd Alu Backdraft Dampr, 42-1\/2 in x 42-1\/2 in, Aluminum","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 Aluminum\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 3250 fpm\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eOverall Height:\u003c\/strong\u003e 45 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\u003e4FZJ1\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\u003e45 In.H-W 6.5 In.L Extrd Alu 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\u003eAluminum\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\u003e3250 fpm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eOverall Height\u003c\/td\u003e \u003ctd\u003e45 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRough Opening Diameter\u003c\/td\u003e \u003ctd\u003e42 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\u003e42 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\u003e10.3 sq ft\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eOverall Width\u003c\/td\u003e \u003ctd\u003e45 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFrame Material Thickness\u003c\/td\u003e \u003ctd\u003e0.8 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eOverall Length\u003c\/td\u003e \u003ctd\u003e6 1\/2 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\u003e3 in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eUPC\u003c\/td\u003e \u003ctd\u003e190735324424\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eDAYTON 4FZJ1 is an extruded aluminum backdraft damper for ventilation applications. It has a square rough opening of 42-1\/2 in x 42-1\/2 in, overall dimensions of 45 in x 45 in x 6-1\/2 in, and fits a 42 in fan diameter. The damper has two panels, a maximum air velocity of 3250 fpm, and a free area of 10.3 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":67670753902805,"sku":"4FZJ1","price":586.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0811\/9091\/2213\/files\/Z11O30fo5oy_faadb45a-988f-419c-8afa-57f595afcdf9.jpg?v=1791317022","url":"https:\/\/proreplacementparts.com\/products\/4fzj1","provider":"Pro Replacement Parts","version":"1.0","type":"link"}