Unused- Ilsung Corporation 8 Pass Shell & Tube Heat Exchanger, Approximate 975 Square Feet, Tema Type AET, Carbon Steel, Horizontal. Shell rated 368psi/Full Vacuum at 392 degrees F., (304) 1" diameter x 158" long tubes rated 366psi/Full Vacuum at 392 degrees F. Openings shell (2) 4", (2) 8", openings for tubes (2) 4", (2) 6". Se more info...