The Sioux Chief Manufacturing 4" Square Max is equipped with a PVC grate and a drainage manifold (DM) SCH 40 design, ensuring optimal water flow and drainage efficiency. This durable product is engineered for heavy-duty applications, making it suitable for both residential and commercial use. The square design allows for easy integration into various surfaces, while the PVC construction ensures longevity and resistance to corrosion. Compliant with industry standards, this drainage solution effectively manages water runoff, preventing pooling and potential damage.