The world’s most popular modular trench drain system. ACO Drain consists of cast polymer concrete bodies with either galvanized steel, stainless steel or cast iron wearing edges. ACO Drain is available in 2″, 4”, 8” and 12” internal widths, and are available with up to 130 ft (40m) of built-in continuous slope. Our drainage systems offer light to heavy duty solutions for traffic ranging from pedestrians to jumbo jets.