5 Piece, Storm Drain Contractor Pack, Includes 3 Pieces Of 39.5" Channel With Grate, 1 End Cap & 1 End Outlet, For Surface Water Drainage System, Easy To Install, Grates Clip In, Bottom Outlet Accommodates 3" & 4" Sewer & Drain Pipe, Lightweight, UV Inhibited, Rated For 5 Tons, Heavy Duty, Can Be Used To Drain Driveways Between Garage & Driveway, Patios To Prevent Water Pooling, Swimming Pools To Divert Pool Water Away From Grass Or Flower Beds, Gardens, Sport Courts & Walkways.