DuraVent FasNSeal Flex 5" Stainless Steel Coupler silver Relining is critical for performance

Relining is critical for performance and safety when a wood-burning insert is installed into an existing UL-127-listed fireplace

and any other outdoor areas

5" Max BTU 400

AC01420 Part Type Body Components Warranty

4" Side Clearance

DuraVent FasNSeal Flex 5" Stainless Steel Coupler silver Relining is critical for performanceMade 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