DAYTON 4HX70 Damper,Roof Mount($167.99Value)

Description

41 In.H-W 4.5 In.L Aluminum Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 41 in, Rough Opening Diameter 39...