Drain the stormwater into your drainage system, not the leaves and debris that can potentially clog it. The 6 in. Square Drain Grate, also known as a drain cover is a good choice for draining light flows of stormwater from small lawns, landscaped areas, patios, and walkways to drain pipe. The 6 in. Drain Grate has an open surface area of 10.4 sq. in. and flow rate of 32 GPM. The square grate has a flared-out design for more open surface area and flow capacity compared to a round grate matching the pipe diameter. Connects to 3 in. & 4 in. sewer and drain pipes & fittings, 3 in. & 4 in. single-wall corrugated pipes, and 3 in. & 4 in. triple-wall pipes for a soil-tight fit. Ideal where there isn't enough depth for a catch basin. The pipe grate is ADA Compliant and heel-proof. Made of polyethylene, a type of plastic, using a mix of virgin and recycled content treated with UV inhibitors to prevent fading and cracking. As part of a complete drainage system, the grate drains water and prevents debris from entering drain pipes. Pipes carry the water to a discharge point downstream such as a pop-up emitter, or to percolate into the ground with a dry well or infiltration trench. Find the right drainage grate for your project with the free NDS Home Drainage Center tool at ndspro.com/home-drainage. NDS, founded in 1972, 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. Color: Green/Matte.