Unused 693 square foot Shell and Tube Heat Exchanger. Bulit by Gaspar Inc. 26” diameter X 6’ 5” face to face length. Carbon steel shell rated 614 PSI @ -20 to 450F. (551) 3/4” SA179 carbon steel tubes rated 611 PSI @ -20 to 450F. 12” Process, 6” Service nozzles. Insulated. National Board# 2830. Serial #37318-2. Built 2010.