Manufactured to BS EN 14011 Fits directly into round bottle Gulley of 110mm underground drainage to extend height when surface level is greater than height of Gulley. Each riser can increase height by 200mm and be easily cut to desired length. Part of our range of durable and impact resistant fittings for 110mm plastic PVCu underground drainage pipes the most common residential system. These lightweight easyfit parts are compatible with all systems manufactured to BS EN 1401 or BS EN 134762. The range of pipe and bend fittings are available with prechamfered plain or socketed ends which feature a ring seal for easy and secure connection to different parts of the system. These fittings can be used in conjunction with new or existing inspection chambers or soakaway crates to complete the underground drainage system. Benefits of our Underground Drainage Outstanding strength resilient to harsh treatment Incredibly light easier to fit and transport Doublesided finish l...