The Unico System® Refrigerant Coil Module, M Series, 36000 to 42000 Btu/hr BTU Rating, Horizontal, Vertical Upflow Configuration, 300 to 1200 cfm Rating, 3 to 4 ton Tonnage, R-32, R-454B Refrigerant Type, 3/8 in Liquid, 7/8 in Suction Connection, 6 Number of Rows, 15.5 FPI Fin Size, Aluminum/Stainless Steel, 42 in L x 16 in W x 20 in H Dimensions