The Osma 315mm Multi-base Inspection Chamber Base 4D934 is a versatile and durable product that provides comprehensive manhole access. It includes 45° and 90° right-hand branches, offering flexible installation options to meet diverse drainage system configurations. Crafted from robust materials, this inspection chamber base ensures longevity and consistent performance. Ideal for both residential and commercial projects, the Osma inspection chamber base is designed for use with 110mm pipework, ensuring easy integration with most standard plumbing systems.