budle for steam heat in and condensate return designed for mounting horizontal inside a tank. Tank side contact parts (OD of tubes and tubesheet) are covered in Tantalum Steam side designed for 250PSI @ 400 degrees F. Exterior design 0 psig @ full vacuum Overall length 176" with 8' tubes. Diameter is 24" OD and tubes are designed to pass through a 22" Pfaudler manhole. Surface area is 217 sq.ft. Shell in connection 3", shell out connection 1.5"