Drain water away, keep the leaves and debris out. The drain grate, also known as a drain cover, blocks drain-clogging infiltrators before they can enter your drainage system. The 9 in. Square Catch Basin Drain works with the 9 in. square catch basin, riser, and low-profile adapter and is ideal for draining heavy flows from lawns, landscaped areas, under downspouts, patios, and walkways. The catch basin grate has an open surface area of 39.5 sq. in. and 121 GPM flow capacity. As part of a complete drainage system, the drain grate drains water into the catch basin or low-profile adapter connected to drain pipe. Pipes carry the water away to a discharge point downstream such as a pop-up emitter, or to percolate into the ground with a dry well or infiltration trench. The catch basin drain grate is made of polyethylene treated with UV inhibitors to prevent cracking or fading. ADA compliant and rated for NDS Class B loads (up to 175 psi) when properly installed. NDS offers free tools such as the Home Drainage Center, Calculators, and NDS Stormwater Drainage mobile app to help make your project a success. Founded in 1972, NDS is the preferred choice of professionals and the leader in stormwater management solutions with proven products, tools, and support to help you get the job done right.