Again, this kit is designed for use with 6 inch inner diameter DuraFlex pipe, but it's also intended to work with a DuraVent DuraFlex Zero Clearance insulation sleeve to meet the UL 1777 standard for masonry chimneys and wood burning appliances. The kit helps ensure safe and efficient venting of your heating appliances, plus it protects your masonry chimney from the damaging effects of flue product condensation.
With your purchase you'll receive a rain cap, a collar plate, and a connector adaptor. This combination provides a means of finishing the venting installation on the roof, as well as a way to connect more than one piece of DuraFlex pipe or transition from that pipe to a heating appliance. When you weigh the benefits of this kit against the cost, it's easy to see why so many homeowners and chimney professionals rely on a DuraFlex SS Insert Kit in their venting installations.