Replacement Propeller Propeller Dia (In.) 22 in Bore Dia (In.) 1/2 in CFM @ 0.000-In. SP - CFM @ 0.150-In. SP 2 982 cfm CFM @ 0.300-In. SP - Min HP 1/6 hp Max RPM 1 140 RPM Pitch (Deg.) 30 Degrees CCW Rotation Number of Blades 3 Propeller Material Aluminum Galvanized Spiders For Use With Air Conditioning Condensers Heat Exchangers and Unit Heaters Heat Pumps Requires -