DuraVent 3DFA 35 Flexible Liner Aluminum DuraFlex AL Vent Pipe Boxed Length DuraFlex AL Collection DuraFlex AL Length 3 Inch x 35 Foot This DuraFlex AL DuraFlex AL Length 3 Inch x 35 Foot is the ultimate in flexible components for strength and flexibility Use with Category I gas burning appliances with draft hood UL 1777 aluminum liner Flex lengths Features: Inner Diameter: 3" Fuel Types Compatible With: Gas Liquid Propane UL Listed: Yes Length: 420" Double Wall Construction Limited Lifetime Warranty 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 Looking for Simpson Dura Vent? You found it Simpson Dura Vent has changed their name to DuraVent DuraVent is a recognized technological leader in the venting industry Consistently the first to market with new innovations in venting systems DuraVent has captured a leadership position in emerging markets DuraVent has patents for several products and continues to design safe and technologically advanced venting The company s research into solving problems with corrosion when biofuels such as corn are used led to the break through patent for PelletVent Pro Scientifically proven materials and unequalled engineering make DuraVent products not only the best choice or safest choice but the only choice for professional quality venting products Powered by ExportYourStore.com