Manufacturer: American Warming and Ventilating

VC-421 8” Rectangular Flange Volume Control Damper.
Volume Control, Airfoil, Parallel or Opposed.

Damper Depth8"

DescriptionVolume Control, Airfoil, Parallel or Opposed

Max Face Velocity3500 FPM

Max Pressure15 in. wg

Max Temperature250 F

Min Size6" x 8"

Max Size48" x 96"

Frame Material14 Ga. Galvanized Steel thru 12 Ga. Galvanized Steel

Blade Material16 Ga. Galvanized Steel, Airfoil Shape, 8" Max Width

Axles1/2" Dia. Plated Steel, Full Length

BearingsOil Impregnated Bronze Plated Steel Arms, Stainless Steel Pivots and Galvanized Steel Angle, External Type

LinkageGalvanized Steel


Finish4" Extended Shaft Is Standard (upon request, see actuator options)

ActuatorNone Is Standard (upon request, see seal options)