DuraVent FasNSeal Flex 2" x 200' Stainless Steel Flex Length btu450000 The heaters can be either

The heaters can be either wall mounted

018" thick G90 Steel for sizes 3" to 14" diameter Inner Diameter 10" Height/Length 18" Adjustable 3" to 14" Technical Drawings & Dimensions

Lava rock included

High-quality steel construction

DuraVent FasNSeal Flex 2" x 200' Stainless Steel Flex Length btu450000 The heaters can be eitherMade 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