The 110mm Underground Bottle Gully Rectangular Lid is generally used to connect waste pipes to the drainage/sewer system it can also be used for rainwater discharge. The advantage over a P trap is that the bottle gully has its own water seal to stop odours from coming out of the drainage/sewer system. When the grid & internal funnel are removed the bottle gully acts as an accessible rodding point. Waste & rainwater pipes can be connected by cutting the grid & pushing the pipes down below the level of the grid. The gully has a 110mm push-fit socket which can be connected to either spigots from bends or underground drainage pipes. The spigot on the hopper allows up to 32mm height adjustment.