Used Allegheny Bradford 100 sq. ft. shell and tube heat exchanger, U-tube design, rated for 100 PSI, shell and tubes constructed of stainless steel, 316 stainless steel tube side, set up as 2-pass heat exchanger, shell measures 10" diameter x 9' long. Includes (120) 3/8" diameter X 9' long tubes, 2-1/2" diameter tri-clamp inlet/outlet. ASME code constructed, shell side is rated for 100 PSI @ 200 deg. F., with 4" diameter inlet/outlet. Allegheny Bradford PO number 85170010600-0603 E805. Previously used at pharmaceutical facility in water for injection system. Good condition.