{"product_id":"heavy-duty-inline-backdraft-shutters-for-ventilati","title":"Heavy Duty Inline Backdraft Shutters For Ventilation Fans Direct Hookup Runs Smooth Blocks Cold Drafts Quick Snap Fit Design Pro Grade Upgrade Built Tough For Daily Duct Work Use","description":"\u003cdiv\u003e\n\u003cp\u003eHeavy duty inline backdraft shutter for ventilation fan ducts \u003cbr\u003e\n✔️ Fits 8inch TD fans snap into place blocks cold air easily\u003c\/p\u003e \u003cp\u003eThis inline backdraft damper acts as a one way air restrictor for your exhaust setup, keeping pests and freezing weather out when your blower shuts off. You typically mount it directly to the outlet pipe of an inline ventilation fan or range hood to prevent unwanted draft loss. The smooth hinge mechanism slides open under airflow pressure and drops shut instantly once the motor stops. It comes ready to attach to standard duct runs without extra adapters.\u003c\/p\u003e \u003cp\u003e✅ TD Twin direct connection layout mounts straight to discharge ports\u003cbr\u003e\n✅ Lightweight steel construction handles continuous daily shop ventilation\u003cbr\u003e\n✅ Quiet operation prevents flutter noise during quick fan cycles\u003cbr\u003e\n✅ Single unit ships measuring roughly 9 by 9 by 6 inches in box\u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What does a backdraft damper really do on an inline ventilation system?\u003cbr\u003eWhen you stop running an exhaust blower, unsealed ducts pull stale room air right back into your filtered space. Installing a sealed backdraft shroud locks airflow pathways and keeps conditioned temperature stable. Buying a heavy duty inline backdraft shield makes your setup handy and cuts down on wasted heat.\u003cbr\u003e- Stops reverse draft flow from sucking humid garage air through open fan piping\u003cbr\u003e- Uses gravity assisted flaps that seat tight against metal lips to lock out insects\u003cbr\u003e- Handles high static pressure builds from long run lengths without warping\u003cbr\u003e- Mounts with simple machine screws so you can swap it out during routine maintenance\u003c\/p\u003e✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49306278265067,"sku":"VXB00279NWTI","price":210.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/71_D6nvnoGL.jpg?v=1787867367","url":"https:\/\/vxb.com\/products\/heavy-duty-inline-backdraft-shutters-for-ventilati","provider":"VXB Bearings","version":"1.0","type":"link"}