Wavin Osma RoundLine is a 112mm (4½") gutter system with a circular 68mm downpipe, designed for domestic standard use. It is suitable for a maximum roof area of 163m² with one downpipe. This pipe shoe connects to the bottom of a 68mm downpipe to direct water flow. It is designed for use with the 0T038B socket bracket and features a concealed socket to hide downpipe cut ends. The product conforms to BS EN 607:2004.