Heavy Duty Exhaust Fan Propeller Dia 42 In. CFM @ 0.000-In. SP 22 735 Sones @ 0.000-In. SP @ 5 ft 24 Sones @ 0.250-In. SP @ 5 ft 25 Max Inlet Temp 104 Degrees F Voltage 115/208-230 60 Hz 1 Phase Full Load Amps 20.2/10.7-10.1 Motor HP 2 Max BHP 2.30 Bearing Type Regreasable Pillow Block Motor RPM 1725 Motor Type Capacitor-Start Motor Enclosure Open Dripproof Motor Insulation Class B Fan RPM 666 Height 46 In. Width (In.) 46 Max Depth 26-3/8 In.