NuTone® BD4 Pressure Relief Damper With Wall Cap and 4 in Collar, 4 in Duct, Steel, Galvanized

  • Brand Name: NuTone®
  • MPN: BD4
  • ASPN: BD4
  • UPC: 026715067787

NuTone® Pressure Relief Damper, 4 in Duct, Steel, Galvanized

  • pdf
  • Combines wall cap and damper into one unit
  • Accepts 4 in round duct
  • Reversible damper can be used for intake or exhaust
  • Damper has positive seal works in horizontal or vertical position
  • Movable collar aids in sealing cutout
  • Built-in bird screen
  • Extra long collar for easy connection of rigid or flexible ducting
  • Wide nailing/sealing flange
  • Can provide code required fresh air ventilation when ducted to furnace cold air return

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