Used horizontal 537 Sq Ft Shell & Tube Heat Exchanger. SA-53B Shell rated 125 PSI @ 160 deg F. 304L-SS Tubes rated 95 @ 321 deg F. 304L-SS Heads. 16" Shell x 19' 1" L. (OAL - 21' 8"). (146) 3/4" OD Tubes x 10' L. Nozzles: Shell - (2) 1"; Tubes - (2) 1". Built by Energy Exchanger, 1981. S/N: X-12562, NB# 379. On Saddles. Weight: 4600 lbs. Previous Use: Aniline Cooler.