One (1) used 1766 sq ft Patterson Kelley shell and tube heat exchanger. 304 stainless steel tubes, tube sheets, bonnets and shell with (600) .75" diameter x 15' long tubes, rated 150 PSI at 200 F, shell rated 150 PSI at 200 F, 3" tubes inlet/outlet, 3" shell inlet/outlet, 30" diameter x 15' long tube bundle, Serial# 203134, National Board# 22742.