5 Ton Ultra Low NOx Single Stage Convertible Natural Gas/Electric Packaged Unit, Volts: 208-230, Hertz: 60, Phase: 1, Refrigerant: R410A, Factory Charge: 135 oz, EER: 11, Department of Energy Guide SEER (Range): 14, CFM: 1965, BTU Input: 21,900, BTU Output: 58,400, Cooling BTU: 57,000, Heating BTU: 72,000, Overall Dims: 44-8/9''H X 56-3/23''W X 47-33/50''D, Weight: 557 lbs **Ultra Low NOx Unit is not LP Compatible**