11,000 Gallon vertical, stainless steel (A240-TP316) tank. Slight cone top, flat bottom. 13' 9" dia x 10' straight side. Rated 6" H2O at 200 deg. F. Top fittings 20" Manway, 6", 4", 3", 2", (2) 1-1/2", 1"; 3" Side bottom outlet. Built by Nooter 1975.