Get current pricing for Oem, OEM-38972-ID Used Unifin Approx. 111 Sq.ft. Heat Exchanger Has (68) 5/8 Od X 10' Long Tubes Rated 75 Psi At 300 Deg. F. Steel Shell Rated 150 Psi At 350 Deg. F. . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: