40 In.H 40 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 40 in, Rough Opening Height 36 in, Rough Opening Width 36 in,...
40 In.H 40 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 40 in, Rough Opening Height 36 in, Rough Opening Width 36 in,...