Replacement Propeller, Propeller Dia. (In.) 18 in, Bore Dia. (In.) 1/2 in, CFM @ 0.000-In. SP 3,293 cfm, CFM @ 0.300-In. SP 2,364 cfm, Min. HP 1/3 hp, Max. RPM 1,140 RPM, Pitch (Deg.) 29 Degrees , CW Rotation, Number of Blades 3, Propeller Material...