NDS 1511 15" Round Black Grate is a proven alternative to traditional concrete drains with UV inhibitors are used to prevent fading and cracking from the sun, chemical-resistant, rustproof and maintenance-free, lightweight and easy to install. NDS has a full line of drainage products, fittings and accessories available. This grate helps to collect and remove excess water from driveways, patios and any other outdoor areas, designed for maximum durability to handle light foot traffic.