NDS Green Structural Foam Polyethylene Atrium Drain Grate, 4 in. is designed to fit 4-inch sewer and drain pipes as well as 4-inch corrugated pipes, making it a versatile choice for various drainage applications. Constructed from durable structural foam polyethylene, this green grate reliable performance and long-lasting resistance to environmental elements. Its sturdy design ensures effective water flow while preventing debris from entering the drainage system, helping to maintain optimal functionality. I for both residential and commercial use, this drain grate combines strength and practicality in one efficient product. Model Number: 75