Pro Series, 5" x 39.38", Polyolefin & Steel Channel Drain Kit, With Metal Grate, Collects & Removes Excess Water From Driveways, Patios & Any Other Outdoor Areas, Fits 3" Or 4" Sewer & Drain Pipe & Fittings, Corrugated Pipe & Triple Wall Pipe, Includes The Channel Drain With Grate & Bottom Outlet Pre-Assembled As Well As 1 End Outlet & 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 & End Outlet Made From Polypropylene, Grate Is Made From Galvanized Steel, Some Installations May Require A Concrete Collar To Meet Load Rating & Loads Are Based On Encasing Product In Concrete, Must Be Installed Using NDS Instructions, ADA Compliant & Is Class B Load Rated.