DuraVent FasNSeal Flex 12" x 130' Stainless Steel Custom Flex Length vinyl-siding-vent-kit measure the number of inches

measure the number of inches from the end of a level ruler down to the roof

Lack of routine maintenance is the most common cause of rust

HM2 Installation Instructions

Match Lit Front Width 60" Rear Width 55" Depth 18" Standing Pilot Front Width 66" Rear Width 60" Depth 18"

DuraVent FasNSeal Flex 12" x 130' Stainless Steel Custom Flex Length vinyl-siding-vent-kit measure the number of inchesMade 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