941 Sq. Ft. Shell & Tube horizontal Heat Exchanger. CS Shell rated 150 PSI @ 105° F, SS Tubes rated 50 PSI @ 227° F. (29) Tubes 1 OD x 12 long. NB# 4424. New SS heads. Shell: ? pass; Tubes: 1 pass. Shell Nozzles: (2) 3, Tube nozzles: (1) 6, (1) 4. Mfg by RMA Co., S/N: A584441A