The HPR-330 is an industrial pressure relief damper with double-flanged channel frame. It is designed to protect HVAC systems and industrial processes by relieving air pressure.

  • Blade Type: Fabricated Airfoil
  • Pressure Relief: ½ in. wg to 6 in. wg
  • Back Pressure: 13½ - 20 in. wg
  • Velocity: Up to 6400 fpm
  • Temperature: -40°F to 250°F