Industrial Backdraft Dampers - HB-240

Model HB-240 industrial backdraft damper has standard extruded aluminum airfoil blades. The damper comes standard with Spark B and C construction with Spark A construction optional. Pressure: Up to 13½ in. wg (3.4 kPa) Velocity: Up to 5150 fpm (26.2 m/s) Temperature: -40°F to 250°F (-40°C to 121°C) Spark B & C construction, optional Spark A construction