The McAlpine S16 is a trap inlet reducer designed to reduce the size of a plumbing trap inlet from 1 1/4" to 1". It is a small but important component that is used in plumbing installations to ensure a secure and watertight connection between the trap and the waste pipe. The S16 trap inlet reducer is made from high-quality materials, ensuring that it is strong, durable, and long-lasting. It is designed to be easy to install and can be quickly and securely fitted onto a plumbing trap using standard plumbing tools. The McAlpine S16 trap inlet reducer is suitable for use in a wide range of different plumbing systems, including those that use traps with different inlet sizes. It is commonly used in both residential and commercial plumbing installations and is a reliable and cost-effective solution for reducing the size of a trap inlet. Overall, the McAlpine S16 trap inlet reducer is an essential component for any plumbing installation that requires a reduction in trap inlet size. Its high-quality construction and ease of use make it a popular choice among plumbers and DIY enthusiasts alike. ・ Available in 2 sizes