4 Ton "SM" Split Geothermal Air Handler, Volts:208/230, Hertz:60, Phase:1, Refrigerant:R410A, Motor:Variable Speed, Type:ECM, CFM:450-900, Air Discharge:Vertical, Return: Horizontal, Return Opening:24" X 24", Plenum Opening:13-1/2" W X 15-3/4"D, Dims:25-3/4"H X 21-1/2"W X 26"D, Weight:130 Lbs, Origin:USA.