Unused 580 Sq Ft Stainless Steel Shell and Tube Heat Exhanger. Mfg Praj Industries. 304L SS Shell MAWP 10 PSI@140F. (260) 1"OD 304 SS Tubes MAWP 56 PSI@131F. (2) Saddle Mounted. Overall 28"D x 9'10"L. National Board #3. Serial #06D058-H1508A. Built 2008. Use - Vent Condenser