BD-51
Manufacturer: American Warming and Ventilating
BD-51 8” Rectangular Counterbalanced Backdraft Damper.
Counterbalanced Backdraft, Single Thickness (Vertical or Horizontal Mount).
Damper Depth8"
DescriptionCounterbalanced Backdraft, Single Thickness (Vertical or Horizontal Mount)
Max Face Velocity3900 FPM
Max Pressure5 in. wg
Max Temperature250 F
Min Size6" x 6"
Max Size48" x 96"
Frame Material14 Ga. Galvanized Steel thru 12 Ga. Galvanized Steel
Blade Material16 Ga. Galvanized Steel thru 12 Ga. Galvanized Steel, 7-1/2" Max Width
Axles1/2" thru 3/4" Dia. Plated Steel, Stub
BearingsPress Fit Flanged Ball Bearings
LinkagePlated Steel Brackets, Brass Barrels and Plated Steel Rod
StopsGalvanized Steel
FinishMill
ActuatorCounterbalanced For Ease Of Operation
SealsNone Is Standard (upon request, see seal options)