The 3-1/2" IPS PVC Countersunk Cleanout Plug from Braxton Harris Co Inc is designed for efficient access to plumbing systems for maintenance and cleaning. This cleanout plug features a countersunk design that allows for a flush finish, minimizing the risk of obstruction. Constructed from durable PVC, it is resistant to corrosion and suitable for various waste and drainage applications. The 3-1/2 inch IPS (Iron Pipe Size) ensures compatibility with standard plumbing systems. This plug is easy to install and remove, making it an essential component for any plumbing setup.