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)
Wavin Osma SquareLine is a 100mm (4") square section gutter system with 61mm square pipe - suitable for a maximum roof area of 178m² (with one downpipe)
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)
Wavin Osma SquareLine is a 100mm (4") square section gutter system with 61mm square pipe - suitable for a maximum roof area of 178m² (with one downpipe)