Pro Series, 5 inch x 39.38 inch Polyolefin and Steel Channel Drain Kit, With Metal Grate, Collects and Removes Excess Water From Driveways, Patios and Any Other Outdoor Areas, Fits 3 inch Or 4 inch Sewer and Drain Pipe and Fittings, Corrugated Pipe and Triple Wall Pipe, Includes The Channel Drain With Grate and Bottom Outlet Pre-Assembled As Well As 1 End Outlet and 1 End Cap, A Unique Interlocking Design Which Allows Each Channel To Securely Lock To The Next For A Secure, Tight Fit, Channel, End Cap and End Outlet Made From Polypropylene, 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, Must Be Installed Using NDS Instructions, ADA Compliant and Is Class B Load Rated.