Utility Blower. Construction tough for ventilating manholes, tanks, and confined spaces. Ductable as blower and/or exhauster. Maintains safe, ventilated workspace. 120 Volt, 15 Amp circuit , On/Off switch with unit frame mounted on wheels. Can be ducted up to 50' in suction or exhaust mode. 4,700 CFM, 1 HP Totally Enclosed Air Over 1,725 RPM Motor.