Used 18,000 gallon horizontal carbon steel pressure tank. Manufactured by Trinity Industries. Rated 250 PSI @ 125 deg F. U Code Stamp. 105.5" OD x 44' 5" OAL. Head thickness - .425"; Shell thickness- .75". Magnatel float guage. Mounted on concrete Saddles. Built 1966. S/N: 2053180. Previous usage: Propane. Weight: Approx. 39,500 lbs.