The Osma 315mm Multi-base Inspection Chamber Shaft 4D937 is a high-quality and efficient solution for underground drainage systems. This product, designed by the reputable brand Osma, features a multi-base design which ensures compatibility with a variety of pipe sizes. Its robust construction aids in the safe inspection and maintenance of drainage systems, while its easy installation saves on time and labour costs. This product is part of Osma’s range of inspection chambers that are known for their reliability and long-lasting durability.