Used approximately 12,000 gallon vertical 304 stainless steel tank. 10'-6" diameter X 17' high straight side. Flat top, cone bottom. Has 2" internal heating coil that is side bottom entering. Top fittings: (3) 3", (3) 2", 3" center bottom discharge, 20" side bottom manway. Mounted on carbon steel legs. Insulation is in excellent shape.