85 sq ft Reconditioned KAM Thermal U-tube carbon steel shell and tube heat exchanger. Shell rated 100 PSI @ 40 to 300 degrees F. Tubes rated 100 PSI @ 40 to 300 degrees F. National Board # 1553. S/N 8192. Originally built 1990. Reconditioned in 2001. 10" diameter X 84" long. 4" service inlets, 2" process inlets.