World leading manufacturer of pre-cast, pre-sloped trench drainage systems, in polymer concrete or fiberglass to meet your project requirements. Systems are designed for use in residential, commercial, highway and industrial applications, anywhere surface drainage is a problem. All drainage systems and gratings have been tested to DIN 19580 load classes A-F (pedestrian to extra heavy duty). The modular units and boltless locking systems make installation and maintenance easy. Where standard products are not a solution, ACO can offer a complete custom design service to deal with difficult layouts and specific corrosion resistance requirements.