USED ATLAS 411 SQUARE FOOT VERTICAL HEAT EXCHANGER. TYPE BEM22-72. CARBON STEEL SHELL RATED 100 PSI @ 300°F. (305) 3/4" DIAMETER X 6' LONG HASTELLOY C-22 TUBES RATED 100 PSI/FULL VACUUM @ 300°F. HASTELLOY SB575 HEADS. 24" DIAMETER X 6' LONG. SIDE LUG MOUNTS. BUILT 1999.