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Office Address: Hart's Hearth Inc. Uplink Companies 2523 Middle Rd. Trenton, NC  28585 Toll Free Phone#:  877-602-FIRE (3473) Fax: 800-571-2765 Office Hours: 9AM to 5PM Mon. - Fri. Closed: Sat. & Sun. Most all orders placed Monday thru Friday by 1:30 pm Eastern will be shipped same day. Tech Support, Customer Service, and Order Takers will be available during office hours above.

Flexi-Liner Aluminum

Flexi-Liner Aluminum


Flexi-Liner Aluminum Gas Relining Pipe

    Flexi-Liner is intended for use as a liner in masonry chimneys used to vent gas-fired appliances with draft hoods and appliances intended for use with Type B gas vents.

   Flexi-Liner is recommended for appliances with an AFUE rating of 83% or less.

   For appliances with greater than 83% AFUE ratings, environments which have excessive chloride and/or sulfide levels, or where condensation is likely to occur, always use an AL 29-4C stainless alloy system.

    Flexi-Liner is UL Listed to the 1777 Standard for gas relining in masonry chimneys. It is made of two-ply, 3003 aluminum and features a 15-year prorated, limited warranty. It has a unique, gas tight, patented seam, and its super flexibility makes installation easy, even in the most challenging chimneys.

    Flexi-Liner comes in UPS shippable kits: 3", 4", and 5" diameters are available in 25' and 35' lengths, and 8" diameter is available in a 25' length.

   Please note the actual outside diameter of Flexi-Liner is approximately 3/8" larger than its inside diameter.

    Each Flexi-Liner Kit contains a rain cap, top adaptor, 12" X 14" top plate, bottom mortar sleeve, top plate, bottom mortar sleeve, top support brackets, fasteners, and instructions. (The 5.5" Kit also includes a bottom flue adaptor.)

  Choose your size from below.

Browse these categories under "Flexi-Liner Aluminum"


3" Aluminum Flexi-Liner


4" Alum Flexi-Liner


5" Alum Flexi-Liner


5.5" Alum Flexi-Liner


6" Alum Flexi-Liner


7" Alum Flexi-Liner


8" Alum Flexi-Liner