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rectangle chimney liners
Rectangular chimney liners,
rectangular flue liner

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Rectangular Stainless Steel Flue Liner Only

Rectangular Chimney Liner, 316Ti Stainless Steel
APPLICATIONS: Wood, pellet, gas, oil, and coal burning appliances

316Ti .006 rectangular stainless steel chimney liner. Air and water tight. This flue liner has 7 ply seams, rated number one in the industry for strength. Our rectangle chimney liners are UL listed in the United States 1777 and ULC Canada 365. They are made of the very best, hand selected, prime stainless steel material available on today's market. The sizes listed in the drop down box below are rectangle O. D. (Outside Dimensions) and pricing is per foot.

See our Rectangle Liner Conversion Chart.

Do You Really Need a Rectangle Liner?

Even if your chimney flue is not round, in some circumstances a round liner will better meet your needs. Round liners are more cost-effective and easier to install. If you have questions, please give us a call at 1-866-708-2446. We'll be happy to help you.

Select your Rock-Flex Rectangle chimney liner size:

A. Rectangle flue liner priced per ft.

B. Rectangle liner total length:

C. Rectangle to rectangle liner connector:

Rectangle Chimney Liner to Liner Connector

You will need a stainless steel rectangle to rectangle liner connector if you are purchasing more than 25 feet of liner, as it will be shipped in separate lengths. (25 feet is the maximum length that can be shipped.) Please order one liner connector for each additional length.

Note: Rectangle chimney liners are custom made to your specifications, and are not refundable. Please call us if you have any questions.

Complete installation instructions

"DIY chimney liners installed the easy way. " Most installations will take no more than 2 to 3 hrs. No rivets or screws required. Chimney liner installation instructions.

Lifetime Forever transferable chimney liner warranty.

We offer only the best protection for you and your home. Air and water tight chimney liners with seven ply seams that lock moisture and flue gases in your chimney liner and keeps them from leaking into the home.

Guards Against Corrosion - Certified Rock Flex stainless steel chimney liners protect against hostile acids which deteriorate masonry clay tile chimneys.

What About Creosote? - Our chimney flue liners do not allow creosote to leach though the liner unlike masonry, clay tile flues, or liners not made of prime stainless. Creosote can catch fire, and lead to a house fire. Thanks to Rock Flex, this harmful creosote is minimized and contained.

Seals Off Carbon Monoxide - When it comes to safety our flexible chimney liners will protect the structure of your home from moisture damage and the very real potential of carbon monoxide poisoning.

UL listed in the USA and CANADA - Our Stainless Steel Chimney Liners and Components are UL tested and listed to USA UL1777 standard, & Canada ULCS635 Underwriter Laboratories. UL is the leader and most recognized in the United States, don't settle for less.

Lifetime / Transferable Warranty - The best warranty anywhere, transferable to new homeowner if you decide to sell. Your going to feel good about this purchase, plus you're adding value to your home with our chimney parts.

316Ti Liners - A unique titanium alloy designed to resist flue acids and the extreme stresses of hot and cold cycles. 316Ti Stainless Steel can be used with fuels such as wood, pellet, gas, oil, and coal. It can withstand multiple heating cycles up to 2100 degrees.

Rock Flex rectangle chimney liners are .006 thick, which exceeds the industry standard, giving you more for your money.

To learn more about insulation blankets and thermo insulation kits click here.

Rockford carries a complete selection of chimney liner supplies. Our Chimney Liner Kits, Chimney Liner Insulation Kits, and all chimney liner kit components are premium stainless-steel, they are 100 percent manufactured in the USA. Buy chimney liners online at Rockford Chimney Supply and you are guaranteed to be getting the best chimney liner supply and lining system available on today's market. Our service, price, & quality is unmatched, anywhere. Canadian customers welcome.

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