UNUSED PERRY PRODUCTS MODEL UTSX 852 SQUARE FOOT HORIZONTAL HEAT EXCHANGER. 2-PASS. 2' DIAMETER X 14' LONG CARBON STEEL SHELL RATED 110 PSI/FULL VACUUM @ -30°F/605°F. (176) 3/4" DIAMETER 304L STAINLESS STEEL U-TUBES RATED 150 PSI/FULL VACUUM @ -30°F/450°F. (2) CARBON STEEL SADDLE SUPPORTS.