NDS Spee-D 400-10 4.75" x 10' Gray Channel Drain, the #1 bestselling channel drain in the USA. Ideal for draining light to 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. Spee-D Channels are made of polyvinyl chloride (PVC) treated with UV inhibitors, and 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.