Pro Series, 5" x 39.38", Polyolefin and Steel Channel Drain Kit, With Metal Grate, Collects and Removes Excess Water From Driveways, Patios and Any Other Outdoor Areas, Fits 3" Or 4" 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.