Door Louver, Material Steel, Finish Gray Primer, Louver Opening Height 20 1/2 in, Louver Opening Width 20 1/2 in, Rough Opening Height 20 1/2 in, Outside Height 22 1/8 in, Outside Width 22 1/4 in, Free Area 1.6 sq ft, Flange Width 1 1/4 in, Maximum...
Door Louver, Material Steel, Finish Gray Primer, Louver Opening Height 20 1/2 in, Louver Opening Width 20 1/2 in, Rough Opening Height 20 1/2 in, Outside Height 22 1/8 in, Outside Width 22 1/4 in, Free Area 1.6 sq ft, Flange Width 1 1/4 in, Maximum...