Heavy Duty Exhaust Fan Propeller Dia 48 In. CFM @ 0.000-In. SP 33 223 Sones @ 0.000-In. SP @ 5 ft 32 Sones @ 0.250-In. SP @ 5 ft 33 Max Inlet Temp 104 Degrees F Voltage 208-230/460 60 Hz 3 Phase Full Load Amps 9.4-8.5/4.2 Motor HP 3 Max BHP 3.45 Bearing Type Regreasable Pillow Block Motor RPM 1740 Motor Type 3-Phase Motor Enclosure Totally Enclosed Fan-Cooled Motor Insulation Class F Fan RPM 660 Height 54 In. Width (In.) 54 Max Depth 28 In.