Approx 2000 Sq.Ft. (1150) 3/4" OD 316L Stainless Steel tubes, U tube Heat exchanger. Approx 3'4" dia. x 10'. Carbon Steel Head. 316L-SS Shell rated 185 PSI @ 400 F. 316L-SS Tubes rated 100 PSI @ 205 F. 1 Pass shell, 2 Pass tubes. Type BEU. Built by Atlas Industrial, S/N: 4782, NB # 3917.