UNUSED approx. 52 Sq Ft SS Heat Exchanger. CS Shell Rated 100 PSI @ 225 deg F; CS Tubes rated 100 PSI @ 350 deg F. Shell: 10-3/4" OD x 69.5" L (100" OAL) (34) 1" dia straight tubes. Type BEM. Nozzles: (3) 2", (1) 1.5". Built by Atlas Industrial, 1996, S/N: 9485, NB# 8052.