As the name suggests the flue liner is manufactured from two strips of raw material, the wider of the two forms the convoluted outer, whilst the inner froms the smooth inner wall. The joint or seam is constructed using a complex folded seam which uses more material than other systems, this then makes the joint extremely strong.
The system has been designed to upgrade existing chimneys which have failed, or for used to increase the performance of the flue.
Manufactured in two skins of either 316L grade
or two skins of 904L grade
or inner skin of 904L and outer skin of 316L
Comes with a range of accessories, and is available in 125mm, 150mm, 180mm and 200mm diameters.