For general purpose shaking in hazardous locations, including Class 1, Group D and Class 2, Groups E, F and G. A 1/4 HP explosion proof motor drives the shaking mechanism which is continuously variable from 70 to 240 excursions per minute. The motor must be connected to an explosion proof conduit in accordance with local electrical codes. Stroke is 1-1/2 inches. Maximum load is 50 pounds. Overall: 33-1/2W x 20 inches deep. Furnished with junction box on motor, but without switch, cord or carrier. For 110V, 60 Hz.