Used 5861 sq ft carbon steel shell and turb heat exchanger. Manufactured by Heat Exchanger Design, Inc. (611) .75"OD SA179 CS tubes MAWP 450PSI/FV@350F. KCS Shell MAWP 350PSI/FV@250F. (2) saddle mounted. Dimensions 28'3.75"OAL x 38" x 58.625". 38250 lb. Serial #4015. National Board #2891. Built 2009.