DuraVent FasNSeal Flex 4" x 40' Stainless Steel Custom Flex Length btu6900 800 BTUs / 2KW) Warranty

800 BTUs / 2KW) Warranty 1 year Length 40 in Width 40 in Height 14 in Weight 162 lbs Warranty

The warranty applies only if the unit is installed and operated in accordance with the printed instructions and in compliance with applicable installation and building codes and good trade practices

and side panels to reduce its clearances

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DuraVent FasNSeal Flex 4" x 40' Stainless Steel Custom Flex Length btu6900 800 BTUs / 2KW) WarrantyMade 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