Glass West condenser features a heavy-wall outer jacket surrounding the inner tube, which has a thinner wall for efficient heat transfer. The tubulations are on the same side to reduce breakage. The adapter ends are tooled to fit No. 3 rubber stoppers. Approximate jacket O.D.: 19mm (3/4"). Approximate jacket length: 200mm (77/8"). Approximate total length: 345mm (139/16"). Approximate tubulation O.D.: 10mm (3/8"). (Corning 2700-200)