Used 2838 Sq. Ft. 304L SS Fin Fan Heat Exhanger. Mfg Chart. Model H120. 2838 Sq Ft (Bare), 39519 Sq Ft (Extended). (238) 1" OD Tubes - 2-pass. Rated 220PSI/FV@350F. (2) 20HP Fans drawing 24200 lbs. Serial #45514. National Board. Built 2015. Used as Syn Gas Trim Cooler.