Louver,Wall Opening 18x18In,Galvannealed, Mfr#: 4FZG3, DAYTON

Modular Intake Louver, Fixed, Louver Max. Exhaust 1,063 cfm, Louver Max. Intake 744 cfm, Intake Louver Outside Height 17 1/2 in, Intake Louver Inside Width 15 in, Louver Free Area 0.622 sq ft, Louver Material Galvannealed Steel, Min. Wall Opening (In.) 18H x 18W, Flange Width (In.) 1 1/4 in, Mounting Hole Size (In.) -, Number of Blades 2, Inside Height (In.) 15 in, Max. Velocity (FPM) 3,000 fpm, Outside Width (In.) 17 1/2 in, Blade Angle (Deg.) 45, For Use With Intake or Exhaust Applications