Choose Options Compare Quick view Gas Liner 8" (200mm) Flexible flue systems for condensing and non-condensing boiler flue £30.94 inc VAT Super Flex flue liner only suitable for gas and oil appliances or where temperatures do not succeed 250 degrees. Single ply 316 grade stainless steel flexible chimney liner for relining of masonry flues. Features: 10 year... £30.94 inc VAT Choose Options Compare Quick view