Wavin Osma SquareLine stopend external 100mm black 4T811B
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) Fits over SquareLine gutter to blank off one end Contains retained seal for secure, watertight fit Conforms to BS EN 607:2004 Range available in Black, White and Brown