5.5" M-Flex 316 Stainless Steel Liner Kit With Tee provides optimal solutions for various appliances, it caters to wood, oil, coal, and gas units. Fireplace Doors online offers one robust .006" standard kit. Each of these kits includes detailed installation instructions and encompasses a lifetime warranty.
Since 1992, M-Flex lining kits have been effectively employed in venting applications, thereby making it the most commonly sought-after 'all fuels' kit. Fireplace Doors Online stocks a range of diameters between 3"-8".
The M-Flex Standard Chimney Liner, with an 5.5" internal diameter, can be purchased in lengths of 15, 20, 25, 30, and 35 feet.
The M-FLEX Liner Kit consists of the following:
Please note, each job has its own unique requirements. If your project needs a larger top plate size, just call us and we make it happen before you place the order.
It's important to know that, by default, all tees come with a 10" snout length. However, extended snouts can be made available on request.
PDF Downloads:
Installation Manual
Manufacturer's Warranty
THE M-FLEX WARRANTY National Chimney Supply, Inc. (N.C.S.), guarantees that the M-Flex chimney liners and components supplied by it are free from defects in material and Manufacturer’s workmanship, and from perforation caused by chimney fire or overfiring caused by you the purchaser, and corrosion.
WARRANTY TIME PERIODS and CONDITIONS Lifetime Warranty for wood, wood pellet, gas and oil burning installations. When used to vent UL listed residential wood burning stoves and fireplaces, wood pellet stoves, Category 1 residential gas, oil burning heating systems, Category 1 gas, and oil burning water heaters, gas fireplaces, or gas logs are guaranteed for the lifetime of the original M-Flex purchaser as long as said purchaser owns the home in which the M-Flex was originally installed. If the home is sold, this warranty shall transfer to the buyer. For M-Flex Lite, warranty will transfer for a period of 10 years from date of M-Flex installation. The M-Flex warranty is subject to the following: (1) installation of the liner and components in accordance with manufacturer’s written installation instructions; (2) use of the liner and components only for the lining and relining of chimneys used to vent residential appliances for which the liner was intended; and (3) annual inspection, maintenance, and cleaning of liner, beginning one year after the date of installation and continuing at intervals of no more than twelve months from the date of installation, by a nationally certified chimney sweep, M-Flex installer, or other qualified chimney professional, who must fill out the appropriate section of the M-Flex Maintenance Record.
The M-Flex warranty is further subject to compliance with the following requirements throughout the warranty period: (1) the chimney must have a chimney cap; (2) Corrosive chemical chimney cleaners must not be used; (3) Plastic bristle flue cleaning brushes are recommended; (4) Driftwood, wood or wood pellets containing salt, preservative treated lumber, plastic, or household trash must not be burned in the appliance, or fireplace connected to the liner. In the case of a chimney fire, the liner must be inspected by a nationally certified chimney sweep, M-Flex installer, or other qualified chimney professional before reuse
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