Dura 120-SF 12" Square Green Grate. Dura Plastic Products provides users with high-quality plastic drainage products engineered with a durable Polypropylene construction. Dura takes pride in implementing changes to better their products, and deliver users with the best possible product in the market. Dura follows their Quality by Design motto, and it has allowed the family owned business to be recognized as an industry leader. This Dura 120-SF 12" Square Green Grate is formed out of High Density Polyethylene, a heavy duty plastic material. Polyethylene also includes UV Protection that keeps the grate from sun damage and fading. This Drainage Grate mounts on the top of the square adapter basin. This Drainage Grate increases flow and blocks large debris from entering your drainage system. This 12" Square Drainage Grate comes in Green.