DuraVent DuraLiner 6" x 18" Round Extend-A-Cap Kit fluid-concrete Sealed Combustion Chamber Maintains Indoor

Sealed Combustion Chamber Maintains Indoor Air Quality

Suppresses chimney fires in an average time of just 22 seconds

Lightweight Aluminum Flashing

With IP34 rating the electric heater is weather resistant and dustproof for outdoor use

For 42-inch

DuraVent DuraLiner 6" x 18" Round Extend-A-Cap Kit fluid-concrete Sealed Combustion Chamber Maintains IndoorDuraLiner ensures safe and efficient venting of heating appliances while protecting the masonry chimney from the damaging effects of flue gas. It is the only factory insulated product with zero zero clearance for high heat wood burning appliances. No need to uncoil flex, insulate a majority of the pipe, or protect the insulation when installing. A smooth inner means less creosote buildup. Installers reduce labor time by 50% or more with DuraLiner. No