The Case 200-Series compaction line includes four single-drum soil models and three double-drum asphalt models. Double-drum, vibratory asphalt models — the DV201, DV202 and DV204 — range in operating weight from 5,510 to 7,720 pounds, and in horsepower ratings from 27 to 38. Drum-width ranges are from 39.4 to 51.2 inches. Equipped with a dual-frequency vibration system (3,180 and 3,720 vpm), the double-drum models generate centrifugal force from 4,580 to 8,877 pounds.