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Steel Frame

Backdraft dampers for exhaust or intake in vertical or horizontal applications.

Backdraft dampers (also known as gravity dampers) used in ventilation systems allow airflow in one direction and prevent airflow in the opposite direction. These can be operated by gravity or be motorized to open and closed when required. The frame is constructed of galvanized steel.

BD-100

BD-100

Backdraft damper, exhaust, horizontal mount, vertical airflow up.

VIEW BD-100
https://catalog-api.greenheck.com/api/product/en-us/150
BD-300 Series

BD-300 Series

Backdraft damper, exhaust, vertical mount, horizontal airflow.

VIEW BD-300 Series
https://catalog-api.greenheck.com/api/product/en-us/149
BD-90

BD-90

Backdraft damper, exhaust, horizontal mount, vertical airflow up.

VIEW BD-90
https://catalog-api.greenheck.com/api/product/en-us/155
GM-30 Series

GM-30 Series

Backdraft damper, exhaust, vertical mount, horizontal airflow.

VIEW GM-30 Series
https://catalog-api.greenheck.com/api/product/en-us/148
WD-100 Series

WD-100 Series

Backdraft damper, exhaust, horizontal mount, vertical airflow up.

VIEW WD-100 Series
https://catalog-api.greenheck.com/api/product/en-us/154
WD-200 Series

WD-200 Series

Backdraft damper, intake, vertical or horizontal mount.

VIEW WD-200 Series
https://catalog-api.greenheck.com/api/product/en-us/153
WD-300 Series

WD-300 Series

Backdraft damper, exhaust, vertical mount, horizontal mount.

VIEW WD-300 Series
https://catalog-api.greenheck.com/api/product/en-us/152
WD-340

WD-340

Backdraft damper, used on centrifugal utility fans.

VIEW WD-340
https://catalog-api.greenheck.com/api/product/en-us/151
WD-400 Series

WD-400 Series

Backdraft damper, intake, vertical or horizontal mount.

VIEW WD-400 Series
https://catalog-api.greenheck.com/api/product/en-us/146