4 Ton 2 Stage Heat Lo NOx Gas/Electric Packaged Unit, Volt:460, Hertz;60, Phase;3, Airflow:Convertible, Refrigerant:R-410A, CFM:1550, AFUE:80, SEER:13, Input BTU:150,000/113,000, Output BTU:120,000/90,000, Dims:36-7/8"H 76"W X 47"D, Weight:573 Lbs, Origin:USA, Refer To Policies/Terms & Conditions For 2015 Federal Regional Standards For 13 SEER Heating And Cooling Products