NDS 970 Fits Spee-D Catch Basin 6 in. Drain Pipes Fittings, 9 in, Black Plastic Drain the excess stormwater away, not the leaves and debris in it. The 9 in. Square Drain Grate blocks troublesome particles from entering and pclogging your drain pipes, while stormwater flows through. Use the drain grate (also known as a drain cover) to drain moderate flows from lawns, landscaped areas, patios, walkways, and under downspouts.The 9 in. square drain grate has an open surface area of 28.4 sq. in. and a flow rate of 87 GPM. Connects to the Spee-D Catch Basin Drain, 6 in. sewer and drain pipe fittings, 6 in. single-wall and dual-wall corrugated pipes, and 6 in. Drain Waste Vent/Schedule 40 pipe for a soil-tight fit. The pipe grate is ADA Compliant. Built to stand up to the elements, it?s made of polyethylene, a type of plastic, using a combination of virgin and recycled content treated with UV inhibitors to prevent fading and cracking from the sun. As part of a complete drainage system, the grate drains water while preventing leaves and debris from entering the drain pipes. The 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.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. Features Protect your drainage system by using a grate on top of drain pipe to block debris from entering and potentially clogging the pipeline while letting excess surface water flow through. Ideal for draining moderate water flows from lawns, landscaped areas, patios, walkways, and under downspouts Fits the Spee-D Catch Basin Drain, 6 in. Sewer and Drain Pipe Fittings, 6 in. Single-Wall Corrugated Pipe, 6 in. Sch. 40 Pipe. 87 GPM flow rate. 28.4 sq. in. open surface area. Rated for NDS Class A loads (up to 60 psi) when properly installed?recommended for pedestrians, bicycles, and wheelchair traffic; ADA compliant Place on top of drain pipe, drain fitting, or Spee-D Basin for a soil-tight fit. 9 in. Square Drain Grates are available in a variety of colors Grate is 2-1/2 in. high; top is 8-7/8 in. square; grate openings are 5/16 in. wide USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.