The Brett Martin Underground 450mm Secured Round Plastic Cover is a robust and reliable solution for your underground construction needs. Made from high-quality plastic, this cover is designed to withstand a loading of up to 50Kn, making it suitable for domestic driveway applications. The design ensures safety and security, with its easy installation and removal system providing convenience. This round plastic cover perfectly fits Brett Martins 450mm inspection chambers, providing an optimal sealing solution.