Z-Flex 5.5" x 40' Aluminum Liner Kit h26.25 It is built with a

It is built with a heavy-duty 1" steel frame

Made with durable polyester fabric

4 popular sizes are available

Traditional look without the mess

Z-Flex 5.5" x 40' Aluminum Liner Kit h26.25 It is built with aUL listed aluminum chimney liner kit for use with Category I natural draft gas fired heating equipment and gas fireplaces. Note: For Use with Natural Draft Appliances. Not intended for use with Category II, III, or IV gas burning appliances as defined by the National Fuel Gas Code, NFPA 54, or other appliances that result in condensation or corrosive acids on the liner of the chimney, or that create positive pressures in the chimney system.