7" Dia. M-Flex 316 Stainless Standard Liner Kit With Tee

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