Red Ewald Fiberglass Tank -12,000 Gallon. S/N: 20548. PO No: 17104. WO No: 074506. Design specific gravity is 1.0 or 8.34#/gallon. Inlet 3 in., Outlet 2 in. Manway approximately 2 ft. (2) Heat trace wires that wind around the waist of this tank. The first wire measures 9 ohms and the second 10 ohms of resistance. There is also a thermocouple regulated by a thermostat knob. Tank has a conical bottom.The skirt sits on the slab. Approximately dimensions: diameter 10 ft. x 20 ft. H.