NDS Drain Grate Square Polyolefin Black 12 in.. The NDS Drain Grate Square Polyolefin Black 12 in. is a versatile and durable solution for all your drainage needs. Designed with precision and crafted from high-quality materials, this drain grate ensures optimal performance and longevity. Its square shape and sleek black finish seamlessly blend into any landscape, making it an ideal choice for both residential and commercial applications. Whether you need to prevent debris from clogging your drainage system or enhance the aesthetic appeal of your outdoor space, this drain grate is the perfect solution. With its easy installation and low maintenance requirements, it's a reliable and practical choice for any project.