Tubular split open type, ideal for catalysis studies in R & D Laboratories, pilot plants etc. Special alloy used has high thermal conductivity which results in high heat transfer rates, maximum operating temperature 525 Deg C, is quick cooling, height 6,” Outer diameter 5”, Inner diameter ½” as standard, but furnace with ¼” or 1” dia can be built on request. Vertical stacking for long tube heating.