Standard Duty Exhaust Fan Propeller Dia 48 In. CFM @ 0.000-In. SP 24 981 Sones @ 0.000-In. SP @ 5 ft 22 Sones @ 0.250-In. SP @ 5 ft 22 Max Inlet Temp 104 Degrees F Voltage 115/208-230 60 Hz 1 Phase Full Load Amps 15.2/8.2-7.6 Motor HP 1-1/2 Max BHP 1.80 Bearing Type Regreasable Pillow Block Motor RPM 1725 Motor Type Capacitor-Start Motor Enclosure Totally Enclosed Fan-Cooled Motor Insulation Class B Fan RPM 491 Height 54 In. Width (In.) 54 Max Depth 23-1/2 In.