Backdraft Dampers - Round - SSWDR-53

The SSWDR-53 round backdraft damper is designed to mount horizontally for airflow down or up; or vertical for horizontal airflow. This damper is opened by air pressure differential and closed by springs. 304 stainless steel construction Pressure: Up to 3 in. wg (0.7 kPa) Velocity: Up to 2000 fpm (10.2 m/s) Temperature: Up to 180°F (82°C)