NDS 1200GRKIT 12" Black Square Catch Basin Drain Kit with Green Plastic Grate is ideal for handling heavy flows from lawns and landscaped areas, under downspouts, as well as patios and walkways. Kit includes a 2-opening catch basin drain, 1 square drain grate (also known as a drain cover), 2 locking outlet adapters, and 1 outlet plug. Catch basin connects to 3 in. & 4 in. sewer and drain, single-wall corrugated, triple-wall, and DWV/Sch. 40 pipes using the included locking outlet adapters. Polypropylene (PP) basin and high-density polyethylene (HDPE) grate are treated with UV inhibitors. Built-in sump is easy to access and clean. Hassle-free limited lifetime warranty guarantees the NDS product is free from defects, or we’ll replace it.