One used 950 gallon Overlay Int. Tank, stainless steel, 6' Dia. x 4'6" straight side with dish top and bottom, jacket rated 100 PSI @ 300 Deg F, vessel rated FV/50 PSI internal. agitated with Lightnin' Mixer with 1.5 " Dia. shaft to 3 blade prop., 3" center bottom discharge, built 1983, serial 10615571G.