Vents KOM 100 U 4 Inch Backdraft Damper Quantity:Vents KOM 100 U 4" 2 Pack Polystyrene cross-flow core

Polystyrene cross-flow core

this passive fresh air vent offers a clean

Includes wall mounted 3 speed selector and MK2 mounting kit

it helps prevent lint and moisture-related problems that can affect dryer performance and safety

poses a significant threat when confined within indoor spaces

Vents KOM 100 U 4 Inch Backdraft Damper Quantity:Vents KOM 100 U 4" 2 Pack Polystyrene cross-flow coreThe 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