Description Overview Universal Dynamics Inc. (Una-Dyn) drying hopper. Brand: Universal Dynamics (Una-Dyn). Type: drying hopper. Model: 440 cu. ft. (12.5 m3) Specifications Capacity: 440 cubic feet (12.5 m3), 15,000 lbs (6,804 kg) at 35 lbs per cubic foot. Technical Configuration Model: 440 cu. ft. (12.5 m3) Type: drying hopper. Capacity: 15,000 pounds (6,804 kg) at 35 pounds per cubic foot. Condition Condition: very good.