Relief Dampers - BR-40 Series

The BR-40 series is a pivoted backdraft damper for low-velocity systems. Horizontal mount with a vertical airflow down. Dampers in this series include the BR-40 (no flange) along with BR-41 (flange on discharge) and BR-42 (flange on intake). Back Pressure: 2 in. wg (.5 kPa) Start-to-Open Pressure: 0.05 in. wg (.01 kPa) Velocity: Up to 2000 fpm (10.2 m/s) Temperature: Up to 180°F (82°C)