MD 411
Manufacturer: American Warming and Ventilating
8" USCG Approved Fire Marine Damper
Damper Depth8"
DescriptionUSCG Approved Fire Damper, Single Thickness
Max Face Velocity3000 FPM
Max Pressure10 in. wg.
Max Temperature250 F
Min Size12" x 12"
Max Size30" x 60"
Frame Material14 Ga. Galvanized Steel
Blade Material16 Ga. Galvanized Steel, 6 1/2" Max Width
Axles1/2" Square Plated Steel, Stub
BearingsOil Impregnated Bronze
LinkagePlated Steel Arms, Stainless Steel Pivots and Plated Steel Angle, In Jamb Type
StopsGalvanized Steel
FinishMill
ActuatorFail Safe Actuator Required (Consult Factory For Your Specific Requirements)
SealsStainless Steel Compression at Jambs Is Standard (Silicone Blade Seals Are Optional)