Replacement Propeller, Industrial/Commercial Heavy-Duty, Propeller Dia. (In.) 48 in, Number of Blades 6, Pitch (Deg.) 38 Degrees , Blade Material Galvanized, Rotation CW, Required Motor HP 8-3/4, Required HP @ Higher RPM 8 3/4 hp, Required HP @ Lower RPM 3 1/4 hp, RPM Low 500 RPM, RPM High 700 RPM, Max. RPM 700, CFM @ 0.000-In. SP 43,400, CFM @ 0.125-In. SP 41,957, CFM @ 0.250-In. SP 40,294, CFM @ 0.375-In. SP 38,364 cfm, CFM @ 0.500-In. SP 36,102 cfm, Blade Height (In.) 5 3/4 in