Backdraft dampers (also called gravity dampers) allow airflow in one direction and prevent reverse airflow for use in exhaust or intake HVAC systems. Backdraft dampers can either be operated by gravity (where pressure or velocity opens and closes the damper) or motorized to open and close when required.
Backdraft Damper, Horizontal Mount
Backdraft damper for roof exhaust fans; horizontal mount with vertical upward airflow. Flangeless design opens with pressure (spring-assisted) and closes by gravity; optional motorpack available.
Backdraft Damper, Horizontal Mount
Backdraft damper for roof exhaust fans; horizontal mount with vertical upward airflow. Discharge flange included; opens with pressure (spring-assisted) and closes by gravity. Optional motorpack available.
Backdraft Damper, Horizontal Mount
Backdraft damper for roof exhaust fans; horizontal mount with vertical upward airflow. Intake flange included; opens with pressure (spring-assisted) and closes by gravity. Optional motorpack available.
Motorized Backdraft Damper
Motorized backdraft damper that opens when energized and spring-closes when de-energized. Flangeless design for horizontal or vertical mount; prevents reverse airflow in roof or sidewall supply fans.
Motorized Backdraft Damper
Motorized backdraft damper that opens when energized and spring-closes when de-energized. Motor-side flange; horizontal or vertical mount. Prevents reverse airflow in roof or sidewall supply fans.
Motorized Backdraft Damper
Motorized backdraft damper that opens when energized and spring-closes when de-energized. Flange opposite motor; horizontal or vertical mount. Prevents reverse airflow in roof or sidewall supply fans.
Backdraft Damper, Vertical Mount
Backdraft damper for horizontal exhaust that prevents reverse airflow. Intake flange included; opens with pressure differential and closes by gravity. Optional motorpack available.
Backdraft Damper, Vertical Mount
Backdraft damper for horizontal exhaust that prevents reverse airflow. Discharge flange included; opens with pressure differential and closes by gravity. Optional motorpack available.
Backdraft Damper, Vertical Mount
Flangeless backdraft damper for horizontal exhaust that prevents reverse airflow. Opens with pressure differential and closes by gravity; optional motorpack available.
Backdraft Damper for Utility Blowers
Backdraft damper that bolts to the flanged outlet of Greenheck model USF utility blowers. Optional motorpacks available.
Non-Motorized Backdraft Damper
Non-motorized backdraft damper for vertical mount with vertical airflow. Flangeless design opens with pressure differential and spring-closes.
Non-Motorized Backdraft Damper
Non-motorized backdraft damper for horizontal mount with vertical downward airflow. Flangeless design opens with pressure differential and spring-closes.
Non-Motorized Backdraft Damper
Non-motorized backdraft damper for vertical mount with horizontal airflow. Discharge flange included; opens with pressure differential and spring-closes.
Non-Motorized Backdraft Damper
Non-motorized backdraft damper for vertical mount with horizontal airflow. Intake flange included; opens with pressure differential and spring-closes.
Extruded Backdraft Damper, Horizontal Mount
Horizontally mounted aluminum backdraft damper for vertical upflow. Gravity-close blades with adjustable counterweights; flangeless for flexible install.
Extruded Backdraft Damper, Horizontal Mount
Horizontal aluminum backdraft damper for vertical upflow. Discharge flange aids attachment; gravity-close blades with adjustable counterweights.
Extruded Backdraft Damper, Horizontal Mount
Horizontal aluminum backdraft damper for vertical upflow. Intake flange supports install; gravity-close blades with adjustable counterweights.
Extruded Backdraft Damper, Vertical Mount
Vertical aluminum backdraft damper for horizontal airflow. Flangeless design with gravity-close blades and adjustable counterweights.
Extruded Backdraft Damper, Vertical Mount
Vertical aluminum backdraft damper for horizontal airflow. Discharge flange aids install; gravity-close blades with adjustable counterweights.
Extruded Backdraft Damper, Vertical Mount
Vertical aluminum backdraft damper for horizontal airflow. Intake flange supports install; gravity-close blades with adjustable counterweights.
Extruded Backdraft Damper, Horizontal Mount
Horizontal aluminum backdraft damper for vertical downflow. Flangeless design with gravity-close blades and adjustable counterweights.
Extruded Backdraft Damper, Horizontal Mount
Horizontal aluminum backdraft damper for vertical downflow. Discharge flange secures install; gravity-close blades with adjustable counterweights.
Extruded Backdraft Damper, Horizontal Mount
Horizontal aluminum backdraft damper for vertical downflow. Intake flange secures installation; gravity-close blades with adjustable counterweights.
Extruded Backdraft Damper, Horizontal Mount
Horizontal aluminum backdraft damper for vertical upflow. Gravity-close blades with adjustable counterweights.
Backdraft Damper, Horizontal Mount
Horizontal-mount backdraft damper for vertical upflow. Opens with pressure differential and closes by gravity to prevent reverse airflow.
Backdraft Damper, Horizontal Mount
Horizontal-mount backdraft damper for vertical upflow. Opens with positive pressure differential and closes by gravity to prevent reverse airflow.
Backdraft Damper, Vertical Mount
Vertical-mount backdraft damper for horizontal airflow. Intake flange simplifies install; opens with pressure differential and closes by gravity to prevent reverse flow.
Backdraft Damper, Vertical Mount
Vertical-mount backdraft damper for horizontal airflow. Discharge flange supports installation; opens with pressure differential and closes by gravity to prevent reverse flow.
Backdraft Damper, Vertical Mount
Vertical-mount backdraft damper for horizontal airflow. Flangeless design; opens with pressure differential and closes by gravity to prevent reverse flow.
Backdraft Damper, Vertical Mount
Flangeless backdraft damper for horizontal airflow applications that prevents reverse airflow in HVAC systems. Blades open by differential pressure and adjustable counterweights; gravity closes blades.
Backdraft Damper, Vertical Mount
Backdraft damper for horizontal airflow that prevents reverse airflow in HVAC systems. Includes a discharge flange for easy installation; blades open with differential pressure and closes by gravity.
Backdraft Damper, Vertical Mount
Backdraft damper for horizontal airflow that prevents reverse airflow in HVAC systems. Features an intake flange for easy duct connection; blades open with differential pressure and closes by gravity.
Industrial Backdraft Damper
Industrial backdraft damper with flanged channel frame and counterbalanced single thickness extruded aluminum blades. Designed to prevent backflow and provide shutoff in HVAC or indutrial process systems. Standard Spark B & C construction.
Industrial Backdraft Damper
Industrial backdraft damper with flanged channel frame and counterbalanced 2V blades. Designed to prevent backflow and provide shutoff in HVAC or indutrial process systems.
Industrial Backdraft Damper
Industrial backdraft damper with flanged channel frame and counterbalanced fabricated airfoil blades. Designed to prevent backflow and provide shutoff in HVAC or indutrial process systems.
Industrial Backdraft Damper
Industrial backdraft damper with flanged channel frame and counterbalanced extruded aluminum airfoil blades for standard Spark B and C construction. Designed to prevent backflow and provide shutoff in HVAC or industrial process systems. Optional Spark A for enhanced protection.
Industrial Backdraft Damper
Industrial backdraft damper with flanged channel frame and counterbalanced fabricated airfoil blades. Designed to prevent backflow and provide shutoff in high pressure and velocity HVAC or indutrial process systems.
Round Backdraft Damper
Round backdraft damper is designed to mount horizontally for airflow down or up; or vertical for horizontal airflow. This damper is opened by air pressure differential and closed by springs.
Round Stainless Steel Backdraft Damper
Round backdraft damper is designed to mount horizontally for airflow down or up; or vertical for horizontal airflow. This damper is opened by air pressure differential and closed by springs.
Round Industrial Backdraft Damper
Round light industrial backdraft damper with flanged frame and counterbalanced blade. Designed to prevent backflow and provide shutoff HVAC applications.
Round Industrial Backdraft Damper
Round industrial backdraft damper with flanged frame and counterbalanced blade. Designed to prevent backflow and provide shutoff of HVAC and industrial process systems.