904L/316L Grade Flue Liner is warranted for 10 years (conditions apply).
A double skinned flexible flue liner suitable for relining within a masonry chimney. Flue liner is suitable for use with burning gas, oil, coal, coke, cured dry logs, cured dry peat, some smokeless fuels.
The flue liner has a smooth inner liner made from 904L grade stainless steel and is 0.12mm thick. The flue liner has a convoluted outer skin made from 316L stainless steel and is 0.12mm thick. The Flue Liner is constructed from two strips of steel and the seam is folded in three planes to give a triplelock seal.