Heavy Duty Exhaust Fan Propeller Dia 60 In. CFM @ 0.000-In. SP 55 335 Sones @ 0.000-In. SP @ 5 ft 45 Sones @ 0.250-In. SP @ 5 ft 45 Max Inlet Temp 104 Degrees F Voltage 208-230/460 60 Hz 3 Phase Full Load Amps 21.1-19.1/9.5 Motor HP 7-1/2 Max BHP 8.63 Bearing Type Regreasable Pillow Block Motor RPM 1740 Motor Type 3-Phase Motor Enclosure Open Dripproof Motor Insulation Class F Fan RPM 555 Height 66 In. Width (In.) 66 Max Depth 34 In. Venturi Clearance Dia 61 In.