Backdraft • Barometric Relief • Pressure Relief
WD Series WD-100 Series WD-200 Series WDR-53/SSWDR-53 End Switch Kit WD-100 Series WD-100 series dampers are horizontally mounted to allow vertical airflow. The primary application is with roof mounted exhaust fans. Optional motorpack is available. WD-200 Series WD-200 series dampers are electric motorized backdraft dampers that open when ...
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