1,110 Sq. Ft. Alaskan Copper Works titanium shell & tube heat exchanger. 3/4" od Titanium tubes and stainless steel shell with insulating jacket. 6" dia. inlet and outlet to tubes and 6" dia. inlet and outlet to shell. Measures 26" wide by 24'8" long Rated on Shell & Tube side- 150 psi @ 225 deg. F. -20 deg. F min. des. metal temp. @ 150 psi. NB # 1769, Serial #1919. Built in 1991.