Mar 04, 2019 · 072 = 6 Tons 090 = 7.5 Tons 120 = 10 Tons 150 = 12.5 Tons 180 = 15 Tons 240 = 20 Tons 180-240 Models 072-090-120-150 Models Refrigerant Type 4 = R-410A Refrigerant Circuits S = Single Circuit D = Dual Circuits PRODUCT SPECIFICATIONS ELA 6-20 TON UPFLOW/HORIZONTAL AIR HANDLERS