12" screw feeder. The inlet diameter is 23.5". The outlet diameter is 9". The screw feeder is 51" from the center of the inlet to the center of the outlet. The motor is 1.1 kW (1.5 hp) and requires 240-266/415-460 vac 3 ph electricity. Carbon steel construction. Overall dimentions are 112" long by 30" wide by 27" tall.