The Osma 315mm Multi-base Inspection Chamber Cover and Frame 4D969 is a top-quality product designed for drainage systems. Produced by Osma, a trusted brand in the plumbing industry, this inspection chamber cover and frame offer durability and longevity. Its constructed from high-grade polypropylene, making it resistant to various environmental conditions. Its 315mm diameter perfectly fits standard size chambers, ensuring secure coverage. With its easy installation process, this product offers efficiency both in performance and functionality for all your plumbing needs.