Used Atlas 210 sq. ft. Hastelloy shell and tube heat exchanger. 16" diameter X 94" face to face length. Carbon steel shell rated 150/FV @ - 20 to 400 degrees F. C-276 tube bundle rated 150/FV @ -20 to 400 degrees F. C276 hastelloy heads. (136) tubes - 3/4" dia. S/N 10001. Built 1998. National Board Number 8498. Has 3" service and process inlets.