50,000 BTU Upflow/Horizontal Natural Gas Furnace, Efficiency:80, Volts:115, Hertz:60, Phase:1, Cfm:775, Stage:1, Speed:Variable, Motor Type:Ecm, BTU Input:50,000, BTU Output:40,000, Dimensions:34"H X 171/2"W X 28"D, Plenum Opening Dimensions:161/2" X 20", Weight:120 Lbs, Made In Mexico, In Mfg Box