The Osma 315mm Multi-base Inspection Chamber Base Inc. 45° Left-hand Branch 110mm 4D913 is an essential component of any robust drainage system. Crafted by industry-leading brand Osma, this inspection chamber base is designed to offer practicality and reliability in one package. With a diameter of 315mm, it features a left-hand branch at a 45° angle and an inlet size of 110mm, making it versatile for various applications. Its high-quality construction ensures long-lasting durability, while its design allows for efficient water flow and easy access for inspections or maintenance.