23.55 sq. ft. vertical, graphite cylindrical block heat exchanger. Shell 15" dia. x 49 9/16" long. MFD by Carbine, type PBC8DL-2PU-1-6, Serial # 11154, NB# 1337, built 1998. ASME code stamped. Process side 100 psi with FV, 150 psi @ -20/+400 deg. F, shell side 185 psi @ 400 deg. F. Single pass axial, 6 pass radial polybloc. Openings: Tube side - 1-2" per head, shell side - 2-1 1/2", 1-2". Mounting lugs.