NDS 9"x9" Green Square Grate. This grate is made of structural foam polyolefin with UV inhibitors, ensuring durability and resistance to fading and cracking from the sun. It has an open surface area of 39.50 sq.in. and a flow rate of 51.75 gpm, making it suitable for medium duty pneumatic tire traffic, autos, and light trucks at speeds less than 20 mph. It is rated a Class B load. NDS grates are a proven alternative to traditional concrete drains.

• 9 in. x 9 in.
• Made of structural foam polyolefin with UV inhibitors.
• Open surface area of 39.50 sq.in. with 51.75 gpm.
• Used with the 9 in. x 9 in. catch basin series.
• Rated a Class B load, which is recommended for medium duty pneumatic tire traffic, autos & light trucks at speeds less than 20 mph.