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 316Ti Stainless Steel Pre-Insulated Flexible 
Fuel All fuel All fuel All fuel All fuel
Construction Corrugated .006" thick wall Smooth .010" thick wall Smooth .013" thick Corrugated .006" thick wall. 1/2" thick Insulation .005 thick outer 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, malleable - can be shaped slightly to get through a damper
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
  • The outer wall prevents insulation from tearing
  • 1/2" Thick insulation
  • 316Ti Stainless steel Inner wall, 430 Stainless steel outer wall
  • Saves time for installation
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 1/2" 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 Use with any fuel type. Chimneys where the liner and the insulation do not have a lot of clearance for installation. 
Cost $ $$$ $$ $$$

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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