The Osmadrain Bottle Gully Riser 4D916 is a robust and reliable addition to any drainage system. Made by the trusted brand Osmadrain, this bottle gully riser is designed to be used in conjunction with a bottle gully base and can easily adapt to meet the requirements of your project. It is crafted from high-quality plastic material for longevity and durability. This product provides an efficient solution for surface water drainage, reducing the risk of blockages and maintaining optimal flow rates.