DuraVent FasNSeal Flex 5" x 50' Stainless Steel Custom Flex Length d82 FSCPP5 5" FSCPP6 6" FSCPP8

FSCPP5 5"  FSCPP6 6"  FSCPP8 8" Clearance 0” clearance to combustibles / vertical installations Listings ULC S636 is Listed as a Class IIA

Gateway 1700

Solution #1: In many cases

Model 621005 Clearance Zero/Zero clearance when installed into a masonry chimney and wrapped with a 1/2" ceramic fiber insulation blanket

DuraVent FasNSeal Flex 5" x 50' Stainless Steel Custom Flex Length d82 FSCPP5 5" FSCPP6 6" FSCPP8Made 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