NDS 990 9″ Green Catch Basin Drain Grate

The NDS 990 Square Catch Basin Drain Grate is a durable, high-performance solution designed to efficiently channel stormwater while preventing debris clogs. Made from UV-resistant high-density polyethylene (HDPE), this 9-inch grate features a standard design for easy installation on NDS catch basins, risers, or low-profile adapters. Ideal for patios, walkways, and landscaped areas, it ensures heavy water flow is directed away from your property, reducing runoff risks and maintaining drainage system integrity.

With a 39.5 sq. in. open surface area and a 121 GPM flow rate, this grate handles medium-duty traffic (Class B loads up to 175 psi) and is ADA compliant. The green finish blends seamlessly with outdoor aesthetics while the sturdy construction resists cracking and fading. Perfect for residential and light commercial use, the NDS 990 grate delivers reliability and long-lasting performance.