Black PVCu. One of the highest capacity PVC-U domestic rainwater systems on the market. Revolutionary designed moulded water-tight seal and retaining clip pre-fitted for quick and easy installation. Newly extended unions to allow for additional expansion and contraction. Benefits from extremely high capacity, so can cope with above average rainfall and large roof areas. Suitable for all properties old and new. Use with square line or round downpipe and fittings. Kitemarked KM501316.