USED APPROXIMATELY 350 SQUARE FOOT STAINLESS STEEL SHELL AND TUBE HEAT EXCHANGER. 24" DIAMETER X 10' LONG. 1/2" TUBES. RATED 300 PSI @ 200 deg F SHELL AND TUBES. NOZZLES: TUBE SIDE: (2) 6" & (2) 2" STEEL BONNETS; SHELL SIDE: (3) 10" FLANGES. MANUFACTURED BY RAS. BUILT 2005.