The Sioux Chief Manufacturing Fat Max Drain features a 4" NH HP CI R&G+VP design, ideal for heavy-duty drainage applications. Constructed from high-quality cast iron, this drain offers exceptional durability and resistance to corrosion. The 4-inch size ensures efficient water flow, making it suitable for both residential and commercial environments. This product meets stringent industry standards, providing peace of mind for plumbing installations. The robust construction and reliable performance make the Fat Max drain a preferred choice for plumbing professionals.