Replacement Propeller Propeller Dia (In.) 26 in Bore Dia (In.) 1/2 in CFM @ 0.000-In. SP - CFM @ 0.150-In. SP 3 960 cfm CFM @ 0.300-In. SP - Min HP 1/5 hp Max RPM 850 RPM Pitch (Deg.) 18 Degrees CW 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 -