110mm striaght underground coupling. Used to join to 110mm plastic pipes together. Underground Drainage Systems The Polypipe range of underground drainage fittings is impressive. There is a comprehensive choice in sizes from 82mm to 315mm. There are short and long radius and adjustable Bends, Junctions, Gully’s, Reducers Raisers, Traps, Hoppers, Adaptors and Couplers
