Industrial Backdraft Dampers
Designed to allow airflow in one direction and prevent reverse airflow.
Industrial Backdraft Dampers
Designed to allow airflow in one direction and prevent reverse airflow.

Industrial backdraft dampers can be applied to exhaust or intakes and are designed to prevent backflow at static pressures up to 20 in. wg and velocities up to 6400 fpm.

HBR-150
HBR-150
Heavy-duty round industrial backdraft damper with flanged frame. Pressure to 6 in. wg, velocity to 4,000 fpm and temperature to 250°F.
https://catalog-api.greenheck.com/api/product/en-us/seo/hbr-150
HB-110
HB-110
Features a 2V blade, is spark B and C resistant with pressure to 5 in. wg, velocity to 3,900 fpm, and a temperature range of -20°F to 180°F.
https://catalog-api.greenheck.com/api/product/en-us/seo/hb-110
HB-120
HB-120
Features single thickness 2V blades with pressure to 8.5 in. wg, velocity to 5,150 fpm, and a temperature range of -20°F to 180°F with seals.
https://catalog-api.greenheck.com/api/product/en-us/seo/hb-120
HB-230
HB-230
Features double-thickness fabricated airfoil blades with pressure to 13.5 in. wg, velocity to 5,150 fpm, and a temperature range of -20°F to 250°F.
https://catalog-api.greenheck.com/api/product/en-us/seo/hb-230
HB-240
HB-240
Features extruded airfoil blades, spark B and C construction, pressure to 13.5 in. wg, velocity to 5,150 fpm, and a temperature range of -40°F to 250°F.
https://catalog-api.greenheck.com/api/product/en-us/seo/hb-240
HB-330
HB-330
Features double-thickness fabricated airfoil blades, pressure to 20 in. wg, velocity to 4,000 fpm, and a temperature range of -40°F to 250°F.
https://catalog-api.greenheck.com/api/product/en-us/seo/hb-330
HBR-050
HBR-050
Light-duty, the damper features a single painted round blade, pressure to 6 in. wg, velocity to 3,000 fpm, and temperature to 250°F.
https://catalog-api.greenheck.com/api/product/en-us/seo/hbr-050