DuraVent DirectVent Pro Flex Coupling: join flex liner when one length will not reach
The DuraVent DirectVent Pro Flex Coupling is a sleeve for connecting aluminum flex liner inside a chimney. When one coil will not reach, it joins another length end to end. Four sheet metal screws hold each side. Choose 3 inch or 4 inch to match your liner. 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 in a masonry or factory built fireplace, two flexible aluminum liners run beside each other through the old chimney. The red marked liner carries exhaust out. The green marked liner brings air down, and both connect to one cap above. The chimney needs cleaning and inspection first. Moisture can condense in a cold vent and corrode its parts, especially with long sideways runs, many elbows, or pipe exposed to outdoor cold. DuraVent calls for yearly vent inspection, including lifting the top cap and removing bird nests. Need liner to join? See the DuraVent DirectVent Pro Aluminum Flex Length liner. The DuraVent DirectVent Pro Flex Coupling ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.

















































