Wavin Osma RoundLine is a 112mm (4½") gutter system with circular 68mm downpipe. For domestic standard use. Use for a maximum roof area of 163m² (with one downpipe) RoundLine socket bracket. When fixed to the wall, provides support for 68mm downpipe socket. For vertical downpipe, brackets should be spaced a maximum of 2m apart. This bracket fits around the fitting, not the pipe.