Used 130 SQ FT Praj Industries vertical 304L Stainless Steel shell & tube heat exchanger. 14" ID x 9' overall length (76) 1" x 6'6" tubes, shell 49psi@185F, tubes 49psiFV@113F, single pass both sides. National Board #2. Serial #06D058-H1464. Built 2008. Past Used Fusel Oil Cooler.