NDS 5380 Gray Plastic Mini Channel Drain 90 Degree Elbow and Grate. No need to saw a straight channel drain and grate and miter together to make the angled turn. Channel is made of polyvinyl chloride and can be solvent-welded with PVC glue for a water-tight connection; grate is made of polypropylene treated with UV inhibitors. The Mini Channel Drain, part of the NDS Profile Channel series, is ideal for light flows of water from pool areas, concrete and paver patios, tennis courts, walkways, and driveways. Channel drains, also called trench drains, are long, narrow drains used for surface drainage of hardscapes. As part of a complete drainage system, 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.