Drain excess stormwater flooding lawns, patios, and landscaping before it lingers and leads to costly property damage. The 12 in. Square Catch Basin Drain Kit 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.