Used 75 sq. ft. Rubicon Inc. vertical heat exchanger. 16" diameter x 71 7/8" long. T-316 stainless steel shell. 10 1/4" diameter C-276 Hastelloy tube sheets. (48) 1" diameter x 18 GA C276 hastelloy tubes. Shell rated 225 PSI @ 400 degrees F. Tube sided rated 15/FV @ 350 degrees F. S/N # 2005. National Board # 1317. Built 1992. Previously used as a Reboiler.