Napoleon 4"x7" Direct Vent Firestop / Vent Sleeve Assembly - AVS47KT-1

Freedom Flex Venting systems are top of the line when it comes to materials, cost efficiency and convenience with proven durability for 25 years. Made with two layers of rolled aluminum, Napoleon's flexible vent pipes pass each and every certification test, exceeding industry standards. Unlike aluminized steel and galvalume, their vent pipes are manufactured of 100% aluminum material and made to withstand the corrosive condensates from combustion.