Used 165 sq. ft. Northland Stainless Coil Tube Heat Exchanger, 304L stainless steel tube with (1) 2" diameter x 318' long coil rated 150 PSI at +350/-110 degs F, 304L stainless steel shell and bonnets rated 50 PSI and full vacuum at +350/-110 degrees F, (4) 3", (3) 1.5", (5) 1" shell inlet/outlet, 2" coil inlet/outlet, 36" diameter x 13' long bundle, Serial No. 895031, National Board No. 939, New 1990.