Used 100 Sq. Ft. SS horizontal Shell & Tube Heat Exchanger. CS Shell rated 170 PSI @ 400 deg F. 304/316-SS Tubes rated 170 PSI @ 400 deg F. 316-SS Heads. 8" dia shell, (19) 1" Tubes. 1 pass shell & tubes. Built by Celenese, (Note 304 & 316-SS mixed tubes). Note: Unit missing nameplate.