DAYTON 5NKL2 Door Louver,18-1/4 W,10-1/8 H,Aluminum

"Door Louver, Intake or Exhaust, Louver Overall Height 10 1/8 in, Louver Overall Width 18 1/4 in, Flange Width (In.) 1 3/16 in, Louver Cutout Height 8 1/2 in, Louver Cutout Width 16 1/2 in, Louver Door Thickness 1-3/8 in to 2-1/4 in, Louver Free Area 0.482 sq ft, Extruded Aluminum Louver Material, Number of Blades 11, Clear Anodized Finish, Blade Angle (Deg.) 45, For Use With New or Existing Doors, Includes FastenersFeaturesFinish: Clear AnodizedItem: Door LouverType: Intake or ExhaustLouver Free Area: 0.482 sq ftLouver Cutout Height: 8 1/2 inFor Use With: New or Existing DoorsNumber of Blades: 11Louver Cutout Width: 16 1/2 inBlade Angle (Deg.): 45Louver Door Thickness: 1-3/8 in to 2-1/4 inLouver Overall Height: 10 1/8 inLouver Overall Width: 18 1/4 inLouver Item: Door LouverIncludes: FastenersLouver Material: Extruded AluminumFlange Width (In.): 1 3/16 in"