Confined Space Fan, Blower/Fan Speed 3,200 RPM, Includes Low Profile Manhole Air Vent, Current (A) 2.5 A, Duct Diameter 8 in, Horsepower 1/4 hp, Maximum Flow in Free Air 877 cfm, Voltage 115 V AC, Color Blue, Material Polyethylene, Height 18 1/2 in,...