40 In.H 28 In.W Non-Drnbl GSteel Intake Louver, Louver Type Stationary Blade, Frame Type Flanged, Frame Depth 4 in, Mounting Style Surface Mount, Outside Height 40 in, Outside Width 28 in, Rough Opening Height 36 in, Rough Opening Width 24 in,...
40 In.H 28 In.W Non-Drnbl GSteel Intake Louver, Louver Type Stationary Blade, Frame Type Flanged, Frame Depth 4 in, Mounting Style Surface Mount, Outside Height 40 in, Outside Width 28 in, Rough Opening Height 36 in, Rough Opening Width 24 in,...