{"product_id":"heavy-duty-6-inch-galvanized-steel-draft-blocker-b","title":"Heavy Duty 6 Inch Galvanized Steel Draft Blocker Blocks Cold Infiltration And Keeps Your Supply Duct Flowin Smooth For A Rock Solid One Way Air Damper Install Setup","description":"\u003cdiv\u003e\n\u003cp\u003eHeavy duty galvanized steel draft blocker seals ducts\u003cbr\u003e✔️ 6 inch galvanized steel dampener with aluminum flaps\u003c\/p\u003e \u003cp\u003eThis single ventilation shutter blocks cold drafts and keeps duct airflow smooth across AC units and heating vents.\u003c\/p\u003e ✅ Galvanized steel frame stops freezing air from blowing backward\u003cbr\u003e\n✅ Aluminum flap leaves slide freely to regulate positive vent pressure\u003cbr\u003e\n✅ Push install design drops straight into round ductwork for tight seals\u003cbr\u003e\n✅ Sized for metal or foam pipe but skips plastic ducts entirely\u003cbr\u003e \u003cp\u003e💡 How does a backdraft damper improve airflow balance in home HVAC layouts? It locks unconditioned indoor air out while letting fresh supply move forward.\n- The steel housing grips tight over flexible ducts to stop heat loss fast.\n- Spring loaded blades snap closed when fan RPM hits zero.\n- Handy for shop garages and attics where uneven pressure ruins comfort.\n- Clean install saves labor costs since no tape or clamps needed upfront.\u003c\/p\u003e✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":67891535806699,"sku":"VXB099KGLXQC","price":58.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/51A9nB2V4_L.jpg?v=1791326974","url":"https:\/\/vxb.com\/products\/heavy-duty-6-inch-galvanized-steel-draft-blocker-b","provider":"VXB Bearings","version":"1.0","type":"link"}