BD-41HD
Manufacturer: American Warming and Ventilating
BD-41HD 5-½” Commercial Rectangular Backdraft Damper.
Counterbalanced Backdraft, Single Thickness (Vertical or Horizontal Mount).
Damper Depth5-1/2"
DescriptionCounterbalanced Backdraft, Single Thickness (Vertical or Horizontal Mount)
Max Face Velocity3000 FPM
Max Pressure3 in. wg
Max Temperature250 F
Min Size6" x 6"
Max Size48" x 72"
Frame Material16 Ga. Galvanized Steel
Blade Material16 Ga. Aluminum, 10-3/8" Max Width
Axles3/4" Dia. Plated Steel, Stub
BearingsPress Fit Flanged Ball Bearings
LinkagePlated Steel Brackets, Brass Barrels and Plated Steel Rod (BD-41 Only)
StopsGalvanized Steel
FinishMill
ActuatorCounterbalanced For Ease Of Operation
SealsNone Is Standard (upon request, see seal options)