18" Single Inlet Direct Drive Plenum Fan, Motor Type:3 HP 208 Volt with Shaft Grounding, Rpm:1870, Max Operating Temp:185, Impeller Design: Backward, Impeller Material: Steel, Blades: Curved, Dimensions:24 1/2"H X 23"W X 22"D, Weight:284Lbs, Bulk, Made in USA