NDS Dura Slope DS-100N 6" x 4' x 9.1" Light Gray Channel Drain, 7.4" Invert Depth, Neutral. This channel drain section is neutral (no slope), 7.36 in. deep, and made of high-density polyethylene (HDPE) containing UV inhibitors. Channel comes with recyclable blank grate inserts to protect the channel from debris during installation, eliminating the need for using plywood. A durable alternative to concrete drains, the lightweight Dura Slope channel drainage system has lower freight costs compared to concrete, and is designed for easier handling and installation. The modular system consists of pre-sloped and neutral sections that snap together for secure alignment and minimal joint movement during installation. Each channel features a bottom outlet, rebar clips, and grate locking system. Channel drains, also known as 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, infiltration trench, or local stormwater system. NDS channel and trench drains are engineered for durability, drainage, and performance.