DuraVent DirectVent Pro Aluminum Flex Length: a flexible liner for venting through an old chimney
The DuraVent DirectVent Pro Aluminum Flex Length is a 35 foot coil of flexible two ply aluminum liner for an old chimney. Choose 3 inch for an insert with two separate liners, or 4 inch for a gas stove chimney conversion kit. DirectVent Pro is DuraVent’s pipe inside a pipe vent for direct vent gas fireplaces and stoves: exhaust goes out through the inner pipe and outside air comes in through the outer pipe. For an insert, two coils run side by side to one cap at the top. One carries exhaust out and is marked red. The other brings air down and is marked green.
With a conversion kit, the 4 inch liner carries exhaust while the old wood stove chimney around it brings air in. Have the chimney inspected first and cleaned before fitting insert liners. Stretch the liner to the length needed, then cut it. Keep it from drooping below the appliance outlet. Need to join coils for a taller chimney? Use the DuraVent DirectVent Pro Flex Coupling connector. The DuraVent DirectVent Pro Aluminum Flex Length ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.















































