Door Louver, Material Steel, Finish Gray Primer, Louver Opening Height 16 1/2 in, Louver Opening Width 16 1/2 in, Rough Opening Height 16 1/2 in, Outside Height 18 1/8 in, Outside Width 18 1/4 in, Free Area 1 sq ft, Flange Width 1 1/4 in, Maximum Door Thickness 2 1/4 in, Minimum Door Thickness 1 3/8 in, Rough Opening Width 16 1/2 in, Blade Angle 45 Degrees , Adjustable Blades No, Intake or Exhaust Application Exhaust, Intake, Includes Fasteners, Number of Blades 30 Louver Overall Height: 18 1/8 in;Louver Overall Width: 18 1/4 in;Louver Cutout Height: 16 1/2 in;Louver Cutout Width: 16 1/2 in;Flange Width (In.): 1 3/16 in;Rough Opening Height: 16 1/2 in;Flange Width: 1 1/4 in;Louver Opening Height: 16 1/2 in;Outside Height: 18 1/8 in;Louver Opening Width: 16 1/2 in;Outside Width: 18 1/4 in;Rough Opening Width: 16 1/2 in;Overall Dimensions: 18 1/8 in H x 18 1/4 in W; Louver Item: Door Louver;Item: Door Louver;Louver Free Area: 1.02 sq ft;Material: Steel;Louver Door Thickness: 1-3/8 in to 2-1/4 in;Louver Material: Steel;Includes: Fasteners;For Use With: New or Existing Doors;Finish: Gray Primer;Type: Intake or Exhaust;Blade Angle (Deg.): 45Degrees;
