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M-Flex Stainless Steel Chimney Liner Basic Insert Kit


Availability: In stock

Quick overview

UL 1777 Listed, 316L .006” thick Stainless Steel Chimney Liner, rain cap, storm collar, top clamp, stove adaptor and top plate. Free shipping and lifetime transferrable warranty.

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The Basic Insert Chimney Liner Kit are the Pro's Choice for fireplace inserts. M-Flex Stainless Steel Chimney Liner Kits are made with high quality .006 thick 316L Prime Stainless Steel. They are UL listed to UL1777 to burn all fuel types and come with a LIFETIME TRANSFERABLE WARANTY. Made in the USA for the past 20 years.

Stainless Steel Chimney Liner Basic Insert Kit Includes:

  • M-Flex Stainless Steel 316L Chimney Liner
    (This stainless chimney liner is the only chimney liner tested for "ALL FUELS")
  • Chimney Liner Cap
  • Chimney Liner Top Plate
  • Chimney Liner Appliance Adapter
  • Installation Instructions


M-Flex Kits are available with a few different options. Make sure to choose all options to update the price of your Chimney Liner Kit.

1. Choose the diameter and length of your chimney liner - If you are installing a wood stove or insert you will want to choose the same size flex liner as the collar size on your appliance. If you are relining for multiple appliances you will want to choose a size appropriate for venting both appliances.

2. Choose your top plate size and style - Choose the size that best fits your chimneys flue:

  • Flat Top Plate - Apply a bead of silicone to the top of your chimney or flue tile and press the plate down for a watertight seal.
  • Flue Fit Top Plate - Simply slide the top plate over your liner and attach it to your flue tile using the supplied set screws.


3. Upgrade to Smoothwall - Upgrade to the newest technology in chimney lining with our Smoothwall Stainless Steel Chimney Liner.  This revolutionary liner has the same great flexibility as our standard M-Flex liner with the improvement of a smooth interior that has no resistance to the flow of the flue gasses. Giving you a more efficient venting system and making it easier to maintain and sweep.

All Fittings are outfitted with the EZ clamp system for easy and strong connections that will stand the test of time.  The Top Termination is also outfitted with the EZ clamp connections for easy access for maintenance and has a Square Lid that mimics the traditional look of a single flue chimney cap.

Necessary Considerations
Don't forget to insulate your liner for better draft. Read more about the benefits of Chimney Liner Insulation.
To save money, and keep your chimney liner in peak performance, your chimney liner must be cleaned and maintained to stay within the lifetime transferrable warranty. Read our article on cleaning a chimney liner.

Free Shipping. A part of your purchase goes to veterans in the Wounded Warrior program. Call us today 1-800-785-9124.



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