Unused 1,420 sq. ft. 316L SS horizontal heat exchanger. Mfg. by Southern Heat Exchanger. 2.1 Design duty (MMBTU/Hr). Carbon Steel Shell:150FV psi @ 375 deg. F. 316L Stainless steel Tubes: 161FV psi @ 375 deg. F. 40" X 180". Serial #22-0251. National Board #16151. Built 2023. Anaerobic Reactor Heat Exchanger. Under Nitrogen Purge