Prevent leaves and debris from entering the channel drain and clogging the drainage system. Use with the Spee-D Channel Drain, part of the NDS Profile Channel series, to collect moderate flows from driveways, concrete and paver patios, pool areas, courtyards, and walkways, and direct it away for proper release | Grate fits on top of the Spee-D Channel Drain and can be secured with screws; use two 2 ft. Spee-D Channel Drain Grates for 4 ft. Spee-D Channel Drain, and five 2 ft. Spee-D Channel Drain Grates for 10 ft. Spee-D Channel Drain. 51 GPM per ft. flow rate. 16.8 sq. in. per linear ft. open surface area. Rated for NDS Class B loads of (up to 175 psi) when properly installed—recommended for medium-duty pneumatic tire traffic, autos, and light trucks at speeds less than 20 mph; ADA compliant | Place on top of Spee-D Channel Drain (grate can be secured to top of channel with screws); use two 2 ft. channel drain grates for 4 ft. Spee-D Channel Drain, and five 2 ft. channel drain grates for 10 ft. Spee-D Channel Drain | Spee-D Channel Drain Grates are available in a variety of colors, materials, and decorative styles | Comes with 1 Spee-D Channel Drain Grate. Hassle-free limited lifetime warranty guarantees the NDS product is free from defects—or we’ll replace it