Used 1,696 Sq.Ft. horizontal carbon steel heat exchanger, manufactured by Gaspar Inc. Size 29-240, Type CET. Shell rated for 250 PSI @ 600 Deg. F. tubes rated for 250 PSI @ 600 Deg. F. (440) 3/4" O.D. tubes, 20' long "U" 29" shell I.D. x 24' OAL. Mounted on 2 saddles. Serial #690038, National Board #223, Year Built: 1990, Previous Use: Acetylene Converter Cross Exchanger. Drawings and pictures available.