DuraVent DuraFlex AL 2" x 25" Aluminum Length w38.5 It is designed to be

It is designed to be used with round chimney pipe systems

75" (C) x 24" (D) Clearances 1" to combustibles in single and multi-family dwellings Listings UL Listed to UL 441 and UL 1777(MH6357)

Right visible

Model Number AC07820 Material Kevlar Sewings

DuraVent DuraFlex AL 2" x 25" Aluminum Length w38.5 It is designed to beDuraFlex Aluminum An economical venting system used for relining masonry chimney for natural gas or liquid propane category I, draft hood equipped appliances, and appliances tested and listed to use Type B Gas Vent for a wide range of applications, including: natural gas fireplaces, gas fired furnaces, boilers, water heaters, and wall or space heating applications. Protects the masonry chimney from damaging effects of flue product condensation.