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Stainless Steel Flexible Chimney Liner Comparison Chart

March 07, 2024

Stainless Steel Flexible Chimney Liner Comparison Chart

View our comparison chart to easily identify the main differences between stainless steel flexible chimney liner kits. We will make your choice as easy as possible! Each installation is unique and the two main factors that will determine which is best for your installation is A) the inside measurements of your current chimney flue and B) the application & fuel that is being burned.

We are here to help you plan your installation and order the correct parts, if you have questions please Contact a Certified Technician today!

316Ti Stainless Steel Flexible  316L Premium Smooth Wall Stainless Steel Flexible 316L Smooth Wall Stainless Steel Flexible AL29-4C Flexible
Fuel All fuel All fuel All fuel Gas or Oil high efficiency furnaces (Typically 86% or higher efficinecy) or Corn
Construction Corrugated .006" thick wall Smooth .010" thick wall Smooth .013" thick Corrugated .006" thick wall
Durability Durable, malleable - can be shaped slightly to get through a damper Extremely durable - due to the heavy construction it cannot be ovalized/shaped Somewhat durable - cannot be ovalized/shaped.
Recommended to use with smooth chimney walls		 Durable
Features
  • Superior flexibility
  • Also available in a pre-insulated option
  • Zero metal memory - will uncoil on its own
  • 20% higher BTU capacity for gas appliances
  • 15% higher GPH capacity for oil burning appliances
  • 20% higher BTU capacity for gas appliances
  • 15% higher GPH capacity for oil burning appliances
  • Highly corrosive resistant
  • Lightweight, easy to handle but typically requires two people to uncoil
Warranty Lifetime transferable warranty Lifetime transferable warranty Lifetime transferable warranty Lifetime transferable warranty
Outside Diameter
  • O.D. is 1/4" larger than the inner liner size listed
  • With 1/4" insulation wrap, O.D. is 1" larger than inner liner size listed
  • With 1/2" insulation wrap, O.D. is 1 3/4" larger than inner liner size listed
  • Pre-Insulated option, O.D. is 1 1/2" larger than inner liner size listed
  • O.D. is 1/8" larger than the inner liner size listed
  • Pre-Insulated option, O.D. is 1 1/2" larger than inner size listed
  • O.D. is 1/4" larger than the inner liner size listed
  • With 1/4" insulation wrap, O.D. is 1" larger than inner liner size listed
  • With 1/2" insulation wrap, O.D. is 1 3/4" larger than inner liner size listed
  • O.D. is 1/4" larger than the inner liner size listed
  • With 1/4" insulation wrap, O.D. is 1" larger than inner liner size listed
  • With 1/2" insulation wrap, O.D. is 1 3/4" larger than inner liner size listed
Best Application Any fuel type, chimney that makes slight bends. Any fuel type, chimneys that make severe bends or an S bend, chimneys that are rough on the inside. Great overall option! Geared towards oil and gas burning appliances that only require light duty brushes. Smooth chimney walls Lining chimneys for gas or oil burning appliances that have an efficiency rating over 86%, and also for corn burning.
Cost $ $$$ $$ $$$

Next Step: Use our Chimney Liner Sizing Calculator!

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Our 316Ti flexible chimney liner and chimney liner components have passed the rigorous testing at the Underwriters Laboratories with best in class status and are UL Listed. So if you are looking for UL listed chimney liner sold directly to homeowners, then look no further than Rockford Chimney

Customer Testimonials

Back in July you gave me excellent advice re. sizing/purchasing a flue liner for the chimney associated with my wood stove. I'd like to thank you once agai... More

—AE Northfield, MN

A few weeks ago I ordered a chimney liner system for my fireplace insert. Your salesman recommended the liner system plus the insulating blanket. I just wa... More

—AH Happy customer

Just got around to installing my new smooth flexible liner and deluxe terra cotta cap (wow). The quality of your product is second to none. Very pleased an... More

—B.B. from Massachusetts

Thanks so much for the great tech service from Dennis, very knowledgable, friendly and proffessional.Your website is the best, beats your competition by fa... More

—Bill in Knoxville

Sue and Dennis, I received the final part of my order yesterday (the chimney cap that actually fits over the chimney chase). It looks wonderfu... More

—CC, VA

Hello, I was shopping for an fireplace insert and called RCS to ask why they were so much cheaper than my local guy, the reply was " we sell thousand of th... More

—Chris, PA.
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