DuraVent FasNSeal Flex 3" x 150' Stainless Steel Custom Flex Length l36 Damper Block Instruction

Damper Block Instruction

21" Case Weight 24 lbs

Ceramic Fiber Log Set

while ensuring high flue gas temperatures for optimum draft performance

DuraVent FasNSeal Flex 3" x 150' Stainless Steel Custom Flex Length l36 Damper Block InstructionMade 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