Severe Duty Upblast Ventilator Drive Type Belt Wheel Dia 21-1/4 In. CFM @ 0.000-In. SP 4922 Assembled No Motor Voltage 208-230/460 3 Phase 60 Hz Max Operating Amps 2.9-2.8/1.4 Motor HP 3/4 Max BHP 0.79 RPM 875 Base Length 29-1/8 In. Base Height 6-1/4 In. Overall Dia 35-3/8 In. Base Width 29-1/8 In. Shaft Dia Sheave End 1 In. Shaft Dia Wheel End 1 In. Overall Height 40-1/4 In. Max Inlet Temp 400 Degrees Housing Material Steel Mounting Location Roof