Industrial Backdraft Dampers - HB-230

The HB-230 is a heavy duty industrial backdraft damper. It has a double flanged channel frame and fabricated airfoil blades. Pressure: Up to 13½ in. wg (3.4 kPa) Velocity: Up to 5150 fpm (26.2 m/s) Temperature: -20°F to 250°F (-29°C to 121°C)