Get current pricing for Oem, Exell, Inc. 1741 Sq. 1741 Sq. Ft. (161.7 Square Meters) Vertical Hastelloy B-2 Shell And Tube Heat Exchanger. Mfd By: Exell, Serial # 12727. Asme Code Stamped. Tema . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: