Continental Fan Manufacturing BDD175 Gravity Operated Backdraft Damper for 7" Ducting

Item #: bci1471542

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Technical Specs

Depth 7
Duct Size 7" Round
Function Backdraft Damper
Material Galvanized Steel

Dampers function as flow regulators and prevent ventilation when not desired, such as when the system is not in use. Let us provide all the accessories needed to install an AXC In-Line Duct Fan or EXT External Mount Exhaust Fan.


  • Low air leakage design
  • Galvanized steel housing
  • Aluminum butterfly damper blades
  • Gravity operated closure
  • Install in horizontal or vertical (upblast only) position
  • Ideal for supply or exhaust applications
  • Fits 7" Round ducting


  • Diameter: 7"
  • Depth: 7"

Continental Fan Company was established in 1986 to manufacture and distribute quality ventilation equipment. Their objectives then were simple… to provide superior products, dependable service, and competitive pricing. They remain unchanged today.

Additional Continental Fan Manufacturing Links

Our SKU: BDD175

This product is listed under the following manufacturer number(s):

  • N/A

*Denotes a finish or option that has been discontinued

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