Replacement Propeller, Propeller Dia. (In.) 22 in, Bore Dia. (In.) 1/2 in, CFM @ 0.000-In. SP -, CFM @ 0.150-In. SP 3,895 cfm, CFM @ 0.300-In. SP -, Min. HP 1/4 hp, Max. RPM 850 RPM, Pitch (Deg.) 28 Degrees , CCW Rotation, Number of Blades 4, Propeller Material Aluminum, Galvanized Steel Spiders, For Use With 13 Seer Air Conditioning Condensers, Heat Exchangers and Unit Heaters, Heat Pumps, Requires - The 13 SEER A/C condenser replacement propeller can be used with compatible replacement condenser fan motors.⢠Rotation facing discharge⢠Embossed aluminum blades and spiders for strength and rigidity⢠Propellers have 1/2" bore and include set screws (hub on intake side).