NDS® 4″ Spee-D Channel decorative Botanical Polyolefin (HDPE) grates have UV inhibitors to help prevent fading and cracking from the sun. All NDS® structural Polyolefin grates are ADA-compliant, chemically resistant, rustproof, and nearly maintenance-free. These grates are also designed to withstand light vehicular traffic often found in patio or driveway drainage. They help to remove excess water runoff and are able to handle up to 51 GPM (Gallons Per Minute).
Four screws (NDS829) are required per grate for fastening down to the channel (sold separately).