24.55 sq. ft. vertical cylindrical graphite block heat exchanger. Shell 15" dia. x 49 9/16" long. MFD by: Carbone, type PBC8DL-2PU-1-6, Serial # 11124, NB# 7293, built 1998. ASME code stamped. Rated on tube side 150 psi @ -20/+450 deg. C, 100 psi with full vacuum, shell side 185 psi @ 400 deg. F. Single pass axial, 6 pass radial. Openings: Tube side - 1-2" on each head, shell 1-2", 2-1 1/2".