47.75 In.H-W 4.5 In.L Aluminum Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter 48 in, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 47 3/4 in, Rough Opening Diameter 48...

In stock
  • RevType
  • 2
  • Manufacturer
  • DAYTON
  • Sku
  • 3HHN3
  • Identity
  • 5997236003

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