BD-28
Manufacturer: American Warming and Ventilating
BD-28 2-⅜” Commercial Rectangular Backdraft Damper.
Gravity Operated Stainless Steel Backdraft, Single Thickness (Vertical Mount).
Damper Depth2-3/8"
DescriptionGravity Operated Stainless Steel Backdraft, Single Thickness (Vertical Mount)
Max Face Velocity2500 FPM
Max Pressure1 in. wg
Max Temperature200 F
Min Size6" x 6"
Max Size30" x 96"
Frame Material14 Ga. 304 Stainless Steel
Blade Material26 Ga. 304 Stainless Steel
Axles3/16" Dia. Stainless Steel, Full Length
BearingsStainless Steel Sleeve
LinkageStainless Steel Brackets, Stainless Steel Shoulder Rivets and Stainless Steel Linkage Bars
StopsStainless Steel
FinishMill
ActuatorGravity Operated Is Standard (Optional Manual or Electric)
SealsPolyurethane Sponge On The Sill and Felt Between Adjacent Blades