Vents KOM 125 U 5 inch Backdraft Damper Boost whole-house fresh air ventilation

whole-house fresh air ventilation

The Vents KOM 125 U Spring-Loaded Backdraft Damper is made for 5" round duct systems

Designed for quiet

123x123x5 MERV 5

External control device connection

Vents KOM 125 U 5 inch Backdraft Damper Boost whole-house fresh air ventilationThe Vents KOM 125 U Spring Loaded Backdraft Damper is made for 5" round duct systems. It prevents backdraft, insects, and birds when the ventilation system is off. Its operation is simple: blades open with airflow and close securely due to a strong spring. This KOM 125 U damper is easy to install in 5" round ducts, and features a 26 gauge galvanized steel housing and precision engineered aluminum blades with spring action. It also has foamed rubber