The 1" x 1.1/4" Straight Metal Tundish TUND300001, made by Reliance in the United Kingdom, is a system boiler unvented cylinder. This product is designed to be used in plumbing systems, specifically in boilers and accessories. With its compact size and durable construction, this tundish is an essential component in ensuring the efficient and reliable functioning of your heating system. Ideal for DIY enthusiasts or professional plumbers, this straight metal tundish provides a reliable solution for your plumbing needs.