Details: Mutual Industries 5170 Round Flue Liner 24"

A clay chimney flue liner is the safest, most efficient product designed to carry away the byproducts of fireplaces and many gas appliances. The inert nature of clay makes the final product resistant to rust and corrosion caused by the by-products of combustion in the furnace. The smooth surface inside the clay flue liner resists creosote build-up caused by low-burning fires. However, all chimneys still need to be periodically inspected and cleaned. Unlike metal, clay is a slow conductor of heat, further minimizing the danger of heating masonry and wood structures surrounding the lining.