Used 18,000 Gallon horizontal, carbon steel pressure tank, rated 250 PSI @ 250 deg F. Manufactured by Chicago Bridge & Iron, Built 1956. S/N: C-3352, NB# 2711. 126" OD x 21' 6" Straight side (OAL: 31' 10") Shell thickness: 1", Head thickness: 1/2". Nozzles: (1) 18" manway, (2) 1-1/2", (1), 2", (2) 2-1/2": (2) 4-1/8" safety valve outlets mounted on manway lid. Previous use: Propane