380 x 380mm Polypropylene Manhole Cover Square to Round (Black)

The 380mm x 380mm Square-to-Round Manhole Cover is specifically designed to solve the common headache of “slabbing up” to a circular drain. While the underside of the frame features a circular spigot that sits perfectly on top of standard 300mm or 320mm inspection chamber risers, the top profile is square. This allows you to lay your paving slabs, blocks, or turf directly up to a straight edge, eliminating the need for complex, messy circular cuts. Manufactured from heavy-duty, corrosion-proof polypropylene, this cover is built to last. It is rated for a 3.5-tonne (35kN) loading, making it perfectly suitable for domestic driveways used by family cars, as well as patios and garden walkways. The frame is “multi-directional,” meaning it can be rotated independently of the chamber below to align perfectly with your paving pattern. It also features a unique slip-resistant tread pattern for safety in wet weather and a dual-locking mechanism to keep the cover securely in place. Effortless Paving Alignment: The square frame eliminates the need for difficult circular cuts in your slabs or blocks, ensuring a neater, faster installation. Universal Chamber Fit: Designed with a stepped spigot that locates directly onto most major manufacturer’s 300mm and 320mm diameter plastic inspection chambers. 3.5 Tonne Load Rating: Strong enough for domestic driveway use and all pedestrian areas, providing peace of mind for residential projects. Corrosion & Slip Resistant: Made from high-grade black polypropylene that will never rust and features a raised safety tread for excellent grip. Dual Locking System: Includes secure locking screws to fix the cover to the frame, preventing unauthorised access and ensuring it remains stable underfoot.