Z-Flex 10" x 50' Aluminum Liner Kit l19 4 kW) Overall heat output

4 kW) Overall heat output rate < 7

Model Number LBG30BM 30" Boulder Mountain Logs "Concrete" Product Type Vent-Free Gas Logs Log Length 30" BTU 39

Mix 600: 23

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Z-Flex 10" x 50' Aluminum Liner Kit l19 4 kW) Overall heat outputUL 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.