{"product_id":"galvanized-steel-roof-vent-cap-4-with-backdraft-damper-bird-screen-for-4-duct","title":"Galvanized Steel Roof Vent Cap 4\" with Backdraft Damper \u0026Bird Screen for 4\" Duct","description":"\u003ch1 style=\"color: rgb(30, 144, 255); text-align: center; font-size: 30px; margin-bottom: 20px;\"\u003eHeavy-Duty 4\" Galvanized Steel Roof Vent Cap – Weatherproof Ventilation\u003c\/h1\u003e\u003cp style=\"margin: 10px 0px; color: rgb(51, 51, 51);\"\u003eProtect your home’s ventilation system with this \u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eProfessional-Grade 4-inch Galvanized Steel Vent Cap\u003c\/span\u003e. Engineered for maximum durability, this cap is designed to terminate 4\" round ducts through the roof. Unlike plastic or thin aluminum alternatives, our heavy-gauge galvanized steel construction withstands hail, heavy snow loads, and intense UV exposure, ensuring a lifetime of reliable service.\u003c\/p\u003e\u003cdiv class=\"pro-tip\" style=\"background-color: rgb(255, 245, 245); border: 1px solid rgb(252, 129, 129); padding: 15px; border-radius: 8px; color: rgb(197, 48, 48); font-weight: bold;\"\u003eSAFETY COMPLIANCE: If using this vent cap for a Clothes Dryer Exhaust, the 1\/4\" bird screen MUST be removed to prevent lint buildup, which can create a fire hazard and reduce dryer efficiency.\u003c\/div\u003e\u003cdiv class=\"section\" style=\"background-color: rgb(240, 248, 255); padding: 20px; border-radius: 10px; margin: 20px 0px; color: rgb(51, 51, 51);\"\u003e\n\u003ch2 style=\"color: rgb(0, 191, 255); font-size: 24px; border-bottom: 2px solid rgb(30, 144, 255); padding-bottom: 5px; margin-top: 30px;\"\u003eKey Performance Features\u003c\/h2\u003e\n\u003cul style=\"margin-left: 20px;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eBuilt-in Backdraft Damper\u003c\/span\u003e – Features a gravity-assisted flapper that opens for exhaust and snaps shut to prevent cold drafts, rain, and pests from entering your home.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eRemovable Pest Guard\u003c\/span\u003e – Includes a 1\/4\" mesh screen that keeps birds, rodents, and large insects out of your ductwork. Easy to \"pop out\" for periodic cleaning.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eOversized Sealing Flange\u003c\/span\u003e – The 10.5\" x 10.5\" wide base provides an ample surface for roofing cement and shingle overlap, ensuring a 100% watertight seal.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eCorrosion-Resistant Coating\u003c\/span\u003e – Hot-dipped galvanized finish provides superior rust protection, even in coastal or high-moisture environments.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eUniversal Pitch Compatibility\u003c\/span\u003e – Designed to work seamlessly on roof pitches ranging from 3\/12 to 12\/12.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"section\" style=\"background-color: rgb(240, 248, 255); padding: 20px; border-radius: 10px; margin: 20px 0px; color: rgb(51, 51, 51);\"\u003e\n\u003ch2 style=\"color: rgb(0, 191, 255); font-size: 24px; border-bottom: 2px solid rgb(30, 144, 255); padding-bottom: 5px; margin-top: 30px;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 1308px; border-collapse: collapse; margin: 20px 0px; background-color: rgb(255, 255, 255); box-shadow: rgba(0, 0, 0, 0.1) 0px 4px 8px;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid rgb(221, 221, 221); background-color: rgb(30, 144, 255); color: white;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid rgb(221, 221, 221); background-color: rgb(30, 144, 255); color: white;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: rgb(249, 249, 249);\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003eHeavy-Gauge Galvanized Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003e\u003cstrong\u003eDuct Size Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003e4-inch Round Duct (Inner Diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: rgb(249, 249, 249);\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003e\u003cstrong\u003eBase Flange Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003e10.5 in x 10.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003e\u003cstrong\u003eScreen Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003e1\/4\" Mesh (Removable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: rgb(249, 249, 249);\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003e\u003cstrong\u003eVent Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003eOne-Way Exhaust (Damper Included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003eBathroom Fans, Range Hoods, Attic Ventilation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\u003cdiv class=\"section\" style=\"background-color: rgb(240, 248, 255); padding: 20px; border-radius: 10px; margin: 20px 0px; color: rgb(51, 51, 51);\"\u003e\n\u003ch2 style=\"color: rgb(0, 191, 255); font-size: 24px; border-bottom: 2px solid rgb(30, 144, 255); padding-bottom: 5px; margin-top: 30px;\"\u003eInstallation Steps for a Watertight Seal\u003c\/h2\u003e\n\u003col style=\"margin-left: 20px;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eOpening:\u003c\/strong\u003e Mark and cut a 4-1\/4\" hole through the roof sheathing at the desired location.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e Slide the vent stem into the ductwork from the attic side. Ensure a secure connection using a worm gear clamp or foil tape.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eSealing:\u003c\/strong\u003e Apply a generous bead of high-grade roofing sealant or \"bull\" cement to the underside of the 10.5\" flange.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eSecuring:\u003c\/strong\u003e Nail the flange to the roof deck using galvanized roofing nails.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eShingling:\u003c\/strong\u003e Install shingles over the top and side portions of the flange, leaving the bottom edge exposed to allow for proper water drainage (shedding).\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eInspection:\u003c\/strong\u003e Ensure the internal damper moves freely and is not obstructed by roofing debris.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\u003cdiv class=\"section\" style=\"background-color: rgb(240, 248, 255); padding: 20px; border-radius: 10px; margin: 20px 0px; color: rgb(51, 51, 51);\"\u003e\n\u003ch2 style=\"color: rgb(0, 191, 255); font-size: 24px; border-bottom: 2px solid rgb(30, 144, 255); padding-bottom: 5px; margin-top: 30px;\"\u003eWhy Choose Galvanized Steel?\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; margin: 10px 0px;\"\u003eIn the harsh environment of a rooftop, materials matter. Plastic vents become brittle and crack after a few summers, and aluminum can easily dent or crush under ice. This \u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eGalvanized Steel Vent Cap\u003c\/span\u003e is the \"Gold Standard\" for roofing contractors. It offers the rigid structural integrity needed to maintain its shape and function for decades, protecting your home from moisture damage and unwanted guests.\u003c\/p\u003e\n\u003c\/div\u003e\u003cp style=\"margin: 10px 0px; color: rgb(51, 51, 51); text-align: center; font-weight: bold;\"\u003eUpgrade to professional-grade roofing hardware—Order your 4\" Steel Vent Cap today!\u003c\/p\u003e\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Air Vent\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Vent and Pipe Flashing\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMPN:\u003c\/strong\u003e 4-in x 10.5-in\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United States\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Air Vent","offers":[{"title":"Default Title","offer_id":43155848593526,"sku":"P300\/3416P+3415P\/1911\/RNW1","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/4277\/6950\/files\/57_2696cc10-9af5-4221-9627-d5a047df135d.jpg?v=1772877771","url":"https:\/\/sellizoe.com\/products\/galvanized-steel-roof-vent-cap-4-with-backdraft-damper-bird-screen-for-4-duct","provider":"Sellizo","version":"1.0","type":"link"}