Fantech RSK 16 - 16" Duct Backdraft Damper
Install the Fantech RSK16 Backdraft Damper in your ventilation system to allow airflow in one direction and stop the airflow in the other direction.
The Fantech RSK16 Backdraft Damper is constructed of galvanized steel for long-lasting durability. It is compatible with circular ducts. It has 2 spring-loaded blades, so you can vertically or horizontally mount the damper.