NDS 864GMTL 5" x 5.5" x 39-3/8" Steel Pro Series Deep Profile Channel Drain Kit, the most durable modular drain system in its class. Captures moderate flows from driveways, patios, courtyards, walkways, & sports facilities, & conveys to drain pipe. Kit includes a 4-3/4 in. deep polypropylene channel, galvanized steel grates, end cap/outlet, & end cap. Channels connect together with interlocking joints. Shorten to 4 in. increments using saw guides. End cap/outlet, integrated bottom outlet, & side knockouts provide 8 outlet options per channel section. Channel drains, also called trench drains, are long, narrow drains used for surface drainage of hardscapes. Channel drains collect and convey water to drain pipes, which carry the water downstream to discharge with a pop-up emitter, or to percolate into the ground with a dry well or infiltration trench. NDS channel and trench drains are designed for durability, drainage, and performance, and are a proven alternative to traditional concrete drains.