Z-Flex 4" x 45' Aluminum Liner Kit d3.9 000 BTU natural gas fire

000 BTU natural gas fire pit

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72 Inch Outdoor Linear Fireplace Burner

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000 BTUs Certification CSA & CE & UKCA certified Warranty 1 Year Product Weight 100 lbs

Z-Flex 4" x 45' Aluminum Liner Kit d3.9 000 BTU natural gas fireUL 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.