DuraVent FasNSeal Flex 7" x 180' Stainless Steel Custom Flex Length btu13000 For some homeowners

For some homeowners

If you have one of the models listed

Model 5MOTC Application For use with category I natural gas-burning or propane-fired appliances such as gas boilers

⁽⁷⁾Optimum overall efficiency at a specific burn rate (LHV)

DuraVent FasNSeal Flex 7" x 180' Stainless Steel Custom Flex Length btu13000 For some homeownersMade from super ferritic stainless steel. Corrosion resistant. Manufactured with a sure seal locking seam for superior strength and flexibility. The smooth inner wall provides for no output reduction, allowing for full appliance efficiency, ease of cleaning and regular maintenance. The smooth inner wall optimizes gas flow, minimizes back pressure, and facilitates condensate management. Only flexible chimney liner listed to UL 1738 standard. What's