Replacement Propeller Propeller Dia (In.) 14 in Bore Dia (In.) 1/2 in CFM @ 0.000-In. SP 2 345 cfm CFM @ 0.300-In. SP 2 022 cfm Min HP 1/4 hp Max RPM 1 725 RPM Pitch (Deg.) 36 Degrees CW Rotation Number of Blades 2 Propeller Material Aluminum Galvalume Spiders For Use With Air Conditioning Condensers Heat Exchangers and Unit Heaters Heat Pumps Requires -