The 3" No Caulk Cast Iron Drain is designed for heavy-duty applications, featuring a 3-1/2" metal spud and a 4" brass strainer. This drain is constructed from high-quality cast iron, ensuring durability and resistance to high pressure and temperature. The no-caulking installation method simplifies the setup process, making it ideal for both residential and commercial plumbing systems. The brass strainer enhances the drain's functionality while providing a stylish finish. This product complies with industry standards, ensuring compatibility with various plumbing applications.