Severe Duty Upblast Ventilator Drive Type Belt Wheel Dia 21-1/4 In. CFM @ 0.000-In. SP - Assembled No Motor Voltage 115/230 1 Phase 60 Hz Max Operating Amps 7.2/3.5 Motor HP 1/2 Max BHP 0.52 RPM 880 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 Wheel Material Steel