4 Ton Lo NOx Heat Gas/Electric Packaged Unit, Volt:460, Hertz:60, Phase:3, Airflow:Convertible, Refrigerant:R-410A, CFM:1920, AFUE:80%, SEER:13, Input BTU:65,000, Output BTU:52,000, Dims:36-7/8"H 73-3/4"W X 47-1/4"D, Weight:573 Lbs, Origin:USA, **Refer To Policies/Terms & Conditions For 2015 Federal Regional Standards For 13 SEER Heating And Cooling Products**