Solve the drainage problem with the National Diversified Sales Spee-D 400-10WH 4.75" x 10' Gray Channel Drain Assembly with Prefastened Plastic Grates, the #1 bestselling channel drain in the USA. The Spee-D Channel Drain Assembly includes a channel drain with prefastened grates for a quicker install. Ideal for draining moderate flows from driveways, concrete & paver patios, pool areas, courtyards, and walkways. The Spee-D Channel Drain features patented honeycomb reinforced walls and flying buttress design for load-bearing support. Bottom flanges have an anchoring lip for straight installation without floating. Channels connect with a coupling. Channel is made of polyvinyl chloride (PVC), drain grates are made of high-density polyethylene (HDPE); channel and grates are treated with UV inhibitors. Spee-D Channels are part of the NDS Profile Channel series. Hassle-free limited lifetime warranty guarantees the NDS product is free from defects—or we’ll replace it.