Used 4,611.74 Sq. Ft. S.A. Armstrong 304 Stainless Steel Plate Heat Exchanger, Model # S-106-3000-388. Rated 150 psi @ 230 F on the hot side; rated 150 psi @ 230 F on the cold side. 388 plates. 8" Connections. Gasket material is NBR. Serial TBD. NB# 5881. Built 2008.