11 7/8" Diameter x 10 11/16" Wide, 1/2" Bore, CW Rotation, Concave, Double Inlet, Direct Drive, Blower Wheel

11"x10" CW Blower Whl;1/2"Bore

20" 2Blade CCw Fan; 1/2" Bore

20" Diameter, 16 degree Pitch, 2 Blade, CCW Rotation, 1/2" Bore on Intake Side, Fan Blade

22" Diameter, 27 degree Pitch, 2 Blade, CCW Rotation, 1/2" Bore on Intake Side, Fan Blade