Built Tough And Ready To Roll Wall Backdraft Damper For 60 Inch HVAC Duct Vent Aluminum Frame 2500 FPM Blocks Reverse Airflow Made In USA Single Unit Solid Reliable Performance Keeps Drafts Out Smooth Sailing

Solid aluminum backdraft dampers stop reverse wind in hvac ducts
✔️ Single 63x63 inch aluminum damper blocks reverse airflow in hvac ducts

This white aluminum wall backdraft damper keeps outdoor wind and exhaust from blowing back into your main hvac ductwork when the system shuts off. You will usually see these installed at terminal fan outlets or large square ventilation openings in commercial buildings and large homes that rely on central climate control.

✅ Two heavy duty panels slide open under pressure then snap shut tight
✅ Rated for maximum airflow speeds up to two thousand five hundred fpm
✅ Measures sixty three inch height and width with a thirty inch frame depth
✅ Designed to fit exactly inside a sixty half inch square rough opening
✅ Provides ample twenty point four square foot free area while staying durable

💡 How do seasoned contractors use a wall mounted backdraft damper to keep mechanical spaces handy and leak free? Building managers need solid airflow control to stop cold winter drafts and hot summer heat from sneaking backward through unused shafts. - Double plate construction slides apart under active supply pressure and closes instantly when fans idle - Tight tolerance aluminum housings accept standard drywall and metal stud setups easily - Low maintenance design stays grease free and operates quietly through thousands of cycles

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