Used 47 Sq ft Doyle and Roth Horizontal Carbon Steel Shell and Tube Heat Exchanger. Shell rated 100PSI/FV @ 350F. (24) .75"OD x 10'L tubes rated 100PSI/FV @ 350F. Approximately 25" OAH x 142 OAL". Weight 1,150 lbs. Serial #S2778-1. National Board #21588. Built 2015.