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


ActuatorGravity Operated Is Standard (Optional Manual or Electric)

SealsPolyurethane Sponge On The Sill and Felt Between Adjacent Blades