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Long-life ball bearing (up to 40 000 hours)
6) Installation environment and service access
Long-life ball bearings (up to 40 000 hours)
this passive fresh air vent offers a clean
With an aluminum frame and removable
Vents KOM 100 U 4 Inch Backdraft Damper Quantity:Vents KOM 100 U 4" 2 Pack Long-life ball bearing (up toThe Vents US KOM 100 U Spring Loaded Backdraft Damper is designed for round duct systems. This essential component ensures the prevention of backdraft (and insects, birds, etc) when the ventilation system is inactive. Its operation is intuitive the blades automatically open when air flows through, and they securely close thanks to a robust spring mechanism. Designed for easy installation, this high quality damper is seamlessly integrated into round
US$ 182.25
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