Replacement Propeller, Industrial/Commercial Heavy-Duty, Propeller Dia. (In.) 30 in, Number of Blades 4, Pitch (Deg.) 22 Degrees , Blade Material Galvanized, Rotation CW, Required Motor HP 1, Required HP @ Higher RPM 1 hp, Required HP @ Lower RPM 1/4 hp, RPM Low 720 RPM, RPM High 1,140 RPM, Max. RPM 1140, CFM @ 0.000-In. SP 9804, CFM @ 0.125-In. SP 9222, CFM @ 0.250-In. SP 8667, CFM @ 0.375-In. SP 8,106 cfm, CFM @ 0.500-In. SP 7,345 cfm, Blade Height (In.) 2 3/16 in, Blade Width (In.) 6 3/8 in