The Manhole Channel Repair System from RELINER/Duran is a molded fiberglass flume combined with a PVX pipe section used to rehabilitate inverts without flow interruption. The field-installed modular components bolt together with minimal tools, are adaptable to a wide range of field conditions and manhole sizes, and are compatible with all current field manhole-lining systems. The full-depth-lined channels are high flow and easy to clean and maintain.  Standard 8- and 12-inch-deep channel sections fit through a 24-inch manhole frame and will accommodate 6- through 12-inch pipes. Larger sizes are available. They can be used in new construction. 800/508-6001; www.reliner.com.