Replacement Propeller, Hubless, Propeller Dia. (In.) 14 in, Bore Dia. (In.) -, CFM @ 0.000-In. SP 1,822 cfm, CFM @ 0.300-In. SP 1,568 cfm, Min. HP 1/4 hp, Max. RPM 1,725 RPM, Pitch (Deg.) 27 Degrees , CW Rotation, Number of Blades 4, Propeller Material Aluminum, Galvalume Spiders, For Use With Air Conditioning Condensers, Heat Exchangers and Unit Heaters, Heat Pumps, Requires Interchangeable Hex Hub 2A563 or 2A564 or 2A565