4 Ton Two Stage Convertible Natural Gas/Electric Packaged Unit, Volts: 208/230, Hertz: 60, Phase: 3, Refrigerant: R410A, Factory Charge: 14 lbs 8 oz, EER: 12, Department of Energy Guide SEER (Range): 16, CFM: 2000, BTU Input: 60,000 BTU Output: 49,000, Cooling BTU: 47,000, Heating BTU: 130,000, Overall Dims: 33-3/8''H X 46-5/8''W X 74-3/8''D, Weight: 555 lbs