{"product_id":"4-inch-backdraft-damper-for-ducting-with-galvanize","title":"4 Inch Backdraft Damper For Ducting With Galvanized Steel Body And Aluminum Flaps One Way Airflow Blocker Inline Vent Deflector Draft Stopper And Backflow Preventer For Residential Ductwork DIY Ready","description":"\u003cdiv\u003e4-Inch Galvanized Backdraft Damper for Ductwork - Single Unit\u003cbr\u003e\n✔️ Galvanized steel body, aluminum flaps, 4 in size, ready \u003cp\u003eThis 4 inch backdraft damper is designed to snap into standard ventilation ducts, offering a one-way airflow blocker that stops air from flowing backward when fans aren’t running. It's a practical DIY-ready solution for homes and small commercial spaces, ideal for HVAC ducts, exhausts, range hoods, and other residential ductwork.\u003c\/p\u003e \u003cp\u003e✅ 4 in (100 mm) galvanized steel body with aluminum flaps for durability \u003cbr\u003e✅ Fits standard ductwork; inline damper designed for residential and light commercial use \u003cbr\u003e✅ Push-in installation; ensure spring orientation is horizontal for best operation \u003cbr\u003e✅ Not compatible with plastic ducts; dimensions vary ±1-3 mm (±0.04-0.12 in) \u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What is a backdraft damper used for in duct systems?\u003c\/p\u003e\n\u003cp\u003eBackdraft dampers help block reverse airflow and keep conditioned air in the intended space. They’re handy for HVAC duct runs in homes and light commercial setups.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePrevent backflow in ventilation and exhaust ducts\u003c\/li\u003e\n\u003cli\u003eImprove energy efficiency and keep odors from spreading\u003c\/li\u003e\n\u003cli\u003eSimple inline installation for 4 inch ducts\u003c\/li\u003e\n\u003cli\u003eBest used in straight sections, avoid plastic ducts\u003c\/li\u003e\n\u003c\/ul\u003e \u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":48207146451179,"sku":"VXB099KGNZRL","price":49.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/614fF1RgQ7L.jpg?v=1778813207","url":"https:\/\/vxb.com\/products\/4-inch-backdraft-damper-for-ducting-with-galvanize","provider":"VXB Bearings","version":"1.0","type":"link"}