Confined Space Fan, Blower/Fan Speed 1,725 RPM, Current (A) 8.2 A, Duct Diameter 20 in, Horsepower 2 hp, Maximum Flow in Free Air 4,650 cfm, Voltage 115/230 V AC, Color Orange, For Use With 20 in Duct, Material Aluminum, Epoxy, Neoprene, Polyamide,...