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Hercules Industries 4BDD

Hercules Industries 4BDD Aluminum Backdraft Damper, 4 Inch, 6 Inch L

Hercules Industries 4BDD

Backdraft dampers are used in ventilation systems to allow airflow in one direction and prevent airflow in the opposite direction. A pressure relief damper is developed with an elevated and adjustable start-open pressure while providing the backdraft function.

Brand Name      :      Hercules Industries
Item Name      :      Backdraft Damper
Size      :      4 Inch
Material      :      Aluminum
Dimension      :      6 Inch Length
  • System velocity and back pressure requirements
  • Mounting orientation and airflow direction
  • Mounting configuration (inserted into duct/opening or flange mounted)
  • Damper operation (gravity or motorized)
  • Start-open pressure