Backdraft Dampers
Designed to allow airflow in one direction and prevent reverse airflow. Backdraft dampers are available in galvanized steel, aluminum, PVC, and 304 stainless steel. Pressure Relief dampers are available in galvanized steel and 304 stainless steel.
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What's New
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Application Information
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Project Profiles
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General Information
Overview
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Model HB
Heavy Duty/Industrial
A backdraft damper is an isolation damper allowing air in one direction only. Greenheck's HB damper series is designed to prevent back flow at static pressures and velocities up to 20 in. wg and 6400 fpm, respectively.
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Models EM/ES/PS/WD
Exhaust Dampers
Exhaust backdraft damper models are designed to allow exhaust airflow but prevent airflow in the reverse direction. Typically used with a fan or power roof exhauster. Vertical or horizontal mount.
Intake Dampers
Intake backdraft damper models are designed to allow supply airflow into a building but prevent airflow in the reverse direction. Typically used with a fan or gravity intake ventilator. Vertical or horizontal mount.
Catalogs
Instruction Manuals
Specifications
Heavy Duty / Industrial Backdraft Dampers
Submittals
EM Series up to 3500 fpm, 10 in. wg
- EM-10 Series (Exhaust Damper, Horizontal Mount)
- EM-30 Series (Exhaust Damper, Vertical Mount)
- EM-40 Series (Intake Damper, Horizontal Mount)
ES Series up to 2000 fpm, 2.5 in. wg
- ES-10 Series (Exhaust Damper, Horizontal Mount)
- ES-30 Series (Exhaust Damper, Vertical Mount)
- ES-40 Series (Intake Damper, Horizontal Mount)
Round WDR series up to 2000 fpm, 3 in. wg
Specialty Backdraft Dampers (Fan and Vent Accessories)
- GM-30 Series (For use with Propeller Sidewall Fans)
- WB-10G (For use with Centrifugal Utility Fan Model SFD).
- WD-323 (For use with Centrifugal Sidewall Exhaust Fans)
- WD-340 (For use with Centrifugal Utility Fans)
Specialty Backdraft Dampers (Vektor Accessories)
WD Series up to 2500 fpm, 2 in. wg
- WD-100 Series (Exhaust Damper, Horizontal Mount)
- WD-200 Series (Intake Damper, Vertical / Horizontal Mount)
- WD-300 Series (Exhaust Damper, Vertical Mount)
- WD-400 Series (Intake Damper, Vertical Mount)
Heavy Duty / Industrial Backdraft Dampers (up to 6400 fpm, 20 in. wg)
- HB-110 (Aluminum, single thickness blade)
- HB-120 (Fabricated, single thickness blade)
- HB-230 (Fabricated, Airfoil Blade)
- HB-240 (Fabricated, Class III Airfoil Blade)
- HB-330 (Fabricated, Class III Airfoil Blade)
