Heavy Duty Exhaust Fan Propeller Dia 48 In. CFM @ 0.000-In. SP 28 995 Sones @ 0.000-In. SP @ 5 ft 27 Sones @ 0.250-In. SP @ 5 ft - Max Inlet Temp 104 Degrees F Voltage 208-230/460 60 Hz 3 Phase Full Load Amps 6.0-5.8/2.9 Motor HP 2 Max BHP 2.30 Bearing Type Regreasable Pillow Block Motor RPM 1735 Motor Type 3-Phase Motor Enclosure Open Dripproof Motor Insulation Class F Fan RPM 576 Height 54 In. Width (In.) 54 Max Depth 28 In. Venturi Clearance Dia 48-1/2 In.