Pro Series 5 in. x 39.38 in. Polyolefin and Steel Channel Drain Kit with Metal Grate. Pro Series 5 in. x 39.38 in. Polyolefin and Steel Channel Drain Kit with Metal Grate. This Pro Series channel drain kit collects and removes excess water from driveways, patios and any other outdoor areas. Fits 3-in or 4-in sewer and drain pipe and fittings, corrugated pipe and triple wall pipe. This Pro Series channel drain kit includes the channel drain with grate and bottom outlet pre-assembled as well as 1 end outlet and 1 end cap. This modular pro channel features a unique interlocking design which allows each channel to securely lock to the next for a secure, tight fit. The channel, end cap, and end outlet are made from polypropylene. The grate is made from galvanized steel. Some installations may require a concrete collar to meet load rating and loads are based on encasing product in concrete; also product must be installed using NDS instructions. ADA compliant and is Class B load rated