NDS 500 3-1/8" x 6' Gray Mini 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. Mini Channels connect with a coupling. The Mini Channel Drain is made of polyvinyl chloride (PVC) treated with UV inhibitors. Mini 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.