Get current pricing for Doyle & Roth, 240 Sq. Ft. Doyle & Doyle & Roth Mfg. Co. Inc. Approximately 240 Sq Ft.316l Stainless Steel U-tube, Shell And Tube Heat Exchanger. 16 Diameter X 7', -2 Long. Ca . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: