Square Grate - 12 inch Black. For use with 12 inch square basin. 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. NDS grates are 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.
Ultraviolet-resistant one-piece injection-molded structural foam polyolefin for maximum strength.
The open surface area is 50.76 square inch with 66.50 gallons per minute