The McAlpine TSG1-Reducer is a plumbing accessory designed for use in drainage systems. It is a trapped gully outlet reducer that has a 2" x 1.5" socket reducer, allowing for easy connection to various plumbing systems. The trapped gully outlet reducer is made of durable materials, ensuring long-lasting performance and resistance to corrosion. It is easy to install and is suitable for use in both domestic and commercial plumbing systems. The McAlpine TSG1-Reducer can be used with the McAlpine TSG1-Trapped Gully and other compatible plumbing systems. It provides reliable protection against foul odors and gases in the drainage system, making it an essential accessory in any plumbing installation.