Master, 30", 3 speed, high velocity direct drive barrel fan, rock solid wheels for portability, durable steel construction, 3 blades, swivel cart for directional airflow control, built-in handle, 8500/7000/6000 air flow cfm, 1/3 , 120v/60hz/2.2, provides air circulation where & when it's needed, making it useful on the factory floor, warehouse or in a barn with livestock.