Combination Louver Damper 12x12

Combination Louver Damper Drainable Louver Max. Exhaust 206 cfm Louver Max. Intake 131 cfm Intake Louver Outside Height 11 1/2 in Intake Louver Inside Width 9 in Louver Free Area 0.297 sq ft Louver Material Extruded Aluminum Min. Wall Opening (In.) 12H x 12W Flange Width (In.) 1 1/4 in Number of Blades 2 Inside Height (In.) 6 in Max. Velocity (FPM) 3 500 fpm Outside Width (In.) 11 1/2 in Blade Angle (Deg.) 45/90 For Use With Intake or Exhaust Applications Includes Bird Screen