DuraVent FasNSeal Flex 3" x 70' Stainless Steel Custom Flex Length accessory Model 660009 Clearance Zero/Zero clearance

Model 660009 Clearance Zero/Zero clearance when installed into a masonry chimney and wrapped with a 1/2" ceramic fiber insulation blanket

3" x 25ft Aluminum Flex Only

Suggested Fire Glass: 110 lbs

Stock Code 19513 Size 11"W x 14"H x 22"D Weight 10 lbs

DuraVent FasNSeal Flex 3" x 70' Stainless Steel Custom Flex Length accessory Model 660009 Clearance Zero/Zero clearanceMade 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