• Product Category
  • Damper
  • Application
  • Backdraft
  • Frame Material
  • Galvanized G-90
  • Frame Thickness
  • 18 ga
  • Blade Material
  • Neoprene Fabric
  • Blade Type
  • Fabric
  • Blade Orientation
  • Parallel
  • Frame Depth
  • 4"
  • Mounting
  • Vertical
  • Duct Shape
  • Rectangular / Square
  • Air Flow Direction
  • Horizontal
  • Max Velocity FPM
  • 1000
  • Unit Mounting
  • Duct
  • Options
  • - 31
  • Flange
  • - 86
  • Aluminum Construction (.063" Aluminum)