Used Patterson-Kelley Twin Shell Dry Blender, 20 Cubic Feet Capacity, 304 Stainless Steel. Maximum material density 60 pounds/cubic feet. (2) 18" diameter charge ports with quick covers, (1) 316 stainless steel intensifier bar driven by a 0.5/1 HP, 3/50-60hz/208-230/460/380-460 volt/1740/1440 rpm motor. Blender driven by a 2/0.5 HP, 3/50-60hz/208-230/460-190-380 volt, 1740/1440 rpm motor with 20.94:1 gearbox ratio. 8" Center bottom outlet with butterfly valve. Serial# 271391, built 1984.