The Osma 450mm Universal Inspection Chamber Blank Off Plug for 110mm Inlets (4D926) is an integral part of any drainage system. Designed by trusted brand Osma, this product ensures a secure seal for inspection chambers when not in use, preventing unwanted elements from entering the system. Crafted with durability and functionality in mind, it fits perfectly into 110mm inlets and can withstand harsh environmental conditions. Easy to install, this blank off plug will be a reliable addition to your drainage system.