7.5 Ton Two Stage Convertible Discharge Gas/Electric Packaged Unit, Volts:208-230, Hertz:60, Phase:3, EER:11.2, Refrigerant:R-410A, Airflow:Convertible, CFM:3000, Efficiency:80, 1st Stage Input/Output BTU: 108,000/86,400, 2nd Stage Input/Output BTU:180,000/144,000, Return Dims:18" X 271/2", Supply Dims:21" X 24", Dims:42"H X 59"W X 89"L, Weight:880 Lbs, Origin:USA.