NDS Channel Drain systems are an effective and popular solution when perimeter drains are needed for hardscaped areas. The NDS Pro Series is a lightweight Channel drain system with interlocking joints, so connections are made quickly and easily. 3" in. wide Light Traffic Channel Grate and Channel Drain with mechanical interlocking joints and UV inhibitors. Open surface area 23.63 square inches per foot. 76.85 GPM per foot. Includes 1 end outlet (#713) and 1 end cap (#712). Bottom outlet fits 3" S&D fittings. Grate should be recessed 1/8" in. below finish grade in non-traffic applications. Grate should be recessed 1/4" in. in traffic applications. ADA Compliant.