The 450mm Ø Clark-drain 3.5T Polypropylene Solid Top Domestic Manhole Cover & Frame Dual Lock is an essential component for any domestic drainage system. Designed to withstand a gross plated weight of up to 3.5 tonnes, this manhole cover is perfect for driveways, patios, and pedestrian areas. Crafted from durable polypropylene, it offers excellent durability and resistance to weather conditions. This product features a solid top for easy integration into any landscape design and a dual lock system for added security.