Replacement Propeller Propeller Dia (In.) 22 in Bore Dia (In.) 1/2 in CFM @ 0.000-In. SP - CFM @ 0.150-In. SP 4 746 cfm CFM @ 0.300-In. SP - Min HP 1/2 hp Max RPM 1 100 RPM Pitch (Deg.) 28 Degrees CCW Rotation Number of Blades 3 Propeller Material Aluminum Galvanized Spiders For Use With 13 Seer Air Conditioning Condensers Heat Exchangers and Unit Heaters Heat Pumps Requires -