The Wavin Sewer Adjustable Gully is designed to collect waste water and to hold water to prevent foul smells from escaping from the drainage system. The gully comes complete with a unique gully grid which is recessed to prevent splashing from rainwater or waste outlets. The gully also has an aperture socket to accommodate a 110mm sewer pipe, allowing for the height of the hopper to be specifically determined by cutting the 110mm pipe to suit each individual situation. This adjustable gully is suitable for use with 110mm sewer pipes and includes a gully grid and aperture socket. It is available in a size of 4 inches.