Standard Duty Exhaust Fan Propeller Dia 48 In. CFM @ 0.000-In. SP 17 349 Sones @ 0.000-In. SP @ 5 ft 13.1 Sones @ 0.250-In. SP @ 5 ft - Max Inlet Temp 104 Degrees F Voltage 115/208-230 60 Hz 1 Phase Full Load Amps 8.8/4.2-4.4 Motor HP 1/2 Max BHP 0.60 Bearing Type Regreasable Pillow Block Motor RPM 1725 Motor Type Capacitor-Start Motor Enclosure Open Dripproof Motor Insulation Class B Fan RPM 341 Height 54 In. Width (In.) 54 Max Depth 23-1/2 In.