twin screw feed with screw conveyor. Feed bin is 48" x 48" with twin screws discharging into a 10" diameter X 8' long screw conveyor. Leason 3/4HP motors and reducers, conveyor driven by approximately 10 HP motor. Designed for feed rates of 0.58 to 3400 cu.ft./hour.Designed for 48" round inlet hopper(not Included), discharge into 14" round opening.