Used 1324 SQ FT Praj Industries vertical 304L Stainless Steel shell & tube heat exchanger. 32" ID x 13' overall length (514) 1" x 9'10" tubes, shell 60psi@167F, tubes 49psi@131F, single pass both sides. National Board #20. Serial #06D058-H1465. Built 2008. Past Use Haydrous Alcohol cooler.