The trench drain grate makes a powerful defender for the drainage system, blocking leaves and debris while water flows through. The stainless steel grate features a bar design. Also known as a drain cover, the drainage grate has an open surface area of 60.5 sq. in. per meter and flow rate of 185.3 GPM. The grate has an NDS Class B load rating when properly installed, and is both ADA compliant and heel proof. One 1-meter (39.37 in.) grate covers one BG-FILCOTEN 100 4 in. trench drain; also available in a 1/2 meter (19.69 in.) size.