This Round to Square Grid Adaptor fits directly over a Round Bottle Gully or the round Gully Raising Piece, providing a square top that simplifies cutting paving into the gully. Constructed from tough, hard-wearing, impact-resistant polypropylene, it is part of a range of durable fittings for 110mm plastic PVC-u underground drainage pipes, compatible with BS EN 1401 or BS EN 13476-2 systems. These lightweight, easy-fit parts feature pre-chamfered plain or socketed ends with a ring seal for secure connections. They can be used with inspection chambers or soakaway crates to complete underground drainage systems. Key features include a durable and impact-resistant design, a lightweight and easy-fit system, a captive push-fit ring seal, and smooth inner walls for improved flow. The product is tested to BS EN 1401-1: 1998.