UNUSED approx. 15 Square Ft Heat Exchanger. CS Shell rated 225 PSI @ 450 deg F. 316-SS Tubes rated 150 PSI @ 450 dceg F. 5" OD Shell. OAL-30". (80) Tubes, .375" dia x 24" L. Nozzles - Shell: (2) 1.5"; Tubes (2) 2.5". On 2 mounting feet. Built by ITT 2010, S/N: 141637-01, NB# 203929. U-1 on file.