55.75 In.H-W 4.5 In.L Aluminum Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter 56 in, Frame Material Galvanized Steel, Number of Panels 2, Maximum Air Velocity 2000 fpm, Overall Height 55 3/4 in, Rough Opening Diameter 56 in,...
RevType | 2 |
Manufacturer | DAYTON |
Sku | 5NKN7 |
Identity | 5997121305 |