12" screw feeder. The inlet diameter is 23.25". The outlet diameter is 9.75". The screw feeder is 59" from the center of the inlet to the center of the outlet. The motor is 1.1 kW(1.5 hp) and requires 230/400 vac 3 ph electricity. Carbon steel construction. Overall dimentions are 116" long by 29" wide by 30" tall.