UNUSED KOCH 268 SQUARE FOOT SEPARATED CLOSURE HAIRPIN HEAT EXCHANGER. CARBON STEEL SHELL AND TUBE, 12" DIAMETER X 96" LONG TUBE LENGTH. RATED 1000/PSI FV AT 365 DEGREES F SHELL AND TUBE SIDE. HAIRPIN HAS A CAST REMOVABLE HOUSING COVER. REMOVABLE TUBE BUNDLE. DESIGNED WITH U-TUBE WITH FLOATING HEAD. MODEL 12096-MTB-AAC. YEAR 2008.