Get current pricing for Doyle & Roth, 61 Sq. Ft. Doyle & R 61 Sq.ft. Horizontal Shell & Tube Heat Exchanger, Mfg. By Doyle & Roth, U-tube Type. 316l Stainless Steel Shell Rated For 100 Psi @ 350 Deg. F, - . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: