DuraVent FasNSeal Flex 5" x 55' Stainless Steel Custom Flex Length w3.5 Its compact European design is

Its compact European design is popular with our customers in Germany

Anti-slip latex backing

Item Number 12S-12HT Catalog Number F0959 Product Type Chimney Support

Model SF4-T Clearance UL and ULC listed to 1777 standard

DuraVent FasNSeal Flex 5" x 55' Stainless Steel Custom Flex Length w3.5 Its compact European design isMade 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