This 68mm downpipe from FloPlast is available in 2.5m lengths and is designed to imitate the appearance of original cast iron pipe drops. It is typically used with half round and deepflow gutter systems. For multi-storey buildings, these pipes can be joined using pipe sockets. The downpipe has an outside diameter of 68mm and features a push-fit joint system, meaning silicon or solvent weld should not be used to allow for future cleaning or unblocking.