NDS 8481 White Micro Channel Drain Coupling to connect together Micro Channel components such as channel sections, outlets, elbows, tees, and cleanouts. Works as part of the Micro Channel Drain system to capture light flows of runoff from surfaces around the pool and spa, on concrete and paver patios, and walkways to prevent mildew growth, concrete staining, and costly structural damage. The Micro Channel Drain Coupling is made of polyvinyl chloride (PVC) treated with UV inhibitors. Micro 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.