18 In.H 18 In.W Drnbl Extrd Alu Intake Louver, Louver Type Stationary Blade, Frame Type Hat Channel, Frame Depth 4 in, Mounting Style Recess Mount, Outside Height 17 1/2 in, Outside Width 17 1/2 in, Rough Opening Height 18 in, Rough Opening Width 18 in, Louver Maximum Intake 744 cfm, Maximum Exhaust 1,063 cfm, Maximum Outside Width 17 1/2 in, Minimum Outside Width 17 1/2 in, Flange Width Not Applicable, Free Area 0.9 sq ft, Beginning Point of Water Penetration 1,031 fpm

The DAYTON intake louver is designed to protect air intake and exhaust openings in exterior walls. 4" deep channel style frame and .090" thick extruded aluminum drainable fixed louver blades channel water away from the blades and down the jambs, eliminating water cascading from blade to blade. Includes 1/2" flattened aluminum birdscreen in removable frame mounted on interior.<br /><br /> Item: Intake Louver<br /> Louver Type: Drainable<br /> Louver Max. Exhaust: 1063 cfm<br /> Louver Max. Intake: 744 cfm<br /> Intake Louver Outside Height: 17-1/2"<br /> Intake Louver Inside Width: 15"<br /> Louver Free Area: 0.885 sq. ft.<br /> Louver Material: Aluminum<br /> Louver Item: Stationary Intake Louver<br /> Min. Wall Opening (In.): 18H x 18W<br /> Flange Width (In.): 1-1/4<br /> Number of Blades: 3<br /> Inside Height (In.): 12<br /> Max. Velocity (FPM): 3500<br /> Outside Width (In.): 17-1/2<br /> Blade Angle (Deg.): 45<br /> For Use With: Intake or Exhaust Applications<br /> Includes: Bird Screen and Screen Fasteners