Tubeaxial Fan Drive Type Belt Blade Dia 18 In. 4671 CFM @ 0.000-In. SP 4504 CFM @ 0.125-In. SP 4321 CFM @ 0.250-In. SP 3914 CFM @ 0.500-In. SP 3421 CFM @ 0.750-In. SP 2163 CFM @ 1.000-In. SP 32 Sones @ 0.250-In. SP @ 5 Ft. Motor HP 1 Max BHP 0.91 Fan RPM 1988 Motor Enclosure Totally Enclosed Fan Cooled 1 Phase Voltage 115/230 Max Motor Height 9 In. Shaft Dia 7/8 In. Number of Blades 6 Full Load Amps 14.0/7.0 Motor Type Capacitor Start Max Inlet Temp 200 Degrees F