Air Circulator and Exhaust Fan Aluminum Replacement Propellers No. of blades: 3 CW rotation facing discharge Embossed aluminum blades and spiders for strength and rigidity Hubs include set screws (hub on intake side) For low static pressure applicationsNote: Air deliveries based on standard test codes of AMCA. When used in system over 0.250" SP, increase motor HP to next larger size. Item: Propeller Type: Replacement Propeller Dia. (In.): 24 Bore Dia. (In.): 5/8 Number of Blades: 3 Pitch (Deg.): 14 Blade Material: Aluminum Rotation: CW Facing Discharge Required Motor HP: 1/10 Required HP @ Higher RPM: 1/4 Required HP @ Lower RPM: 1/12 RPM Low: 1050 RPM High: 1500 Max. RPM: 1725 CFM @ 0.000-In. SP: 3908/2736 CFM @ 0.125-In. SP: 3588/2250 CFM @ 0.250-In. SP: 3227/1851 Blade Height (In.): 3-13/32 Blade Width (In.): 11-13/16 Remarks: View Catalog Page For Better Selection Criteria For Use With: Exhaust Fans and Circulators