Used 330 Sq Ft Doyle and Roth 304 Stainless Steel Horizontal Shell and Tube Heat Exchanger. 75" OD x 10'L tubes rated 232PSI @ 600F, FV @ 350 F. Shell rated 232 PSI @ 752 F, FV @ 350 F . Approximately 35" OAH x 153" OAL. (160) . Weight 2,652 lbs. Serial #S2765-1. National Board #21563. Built 2015.