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Stainless Steel Flexible Chimney Liner

How to Specify

Using tables from the National Fuel Gas Code or our Sizing & Application Guide, determine the diameter of venting required. The Sizing & Application Guide also offers tips on good design including multi-appliance system sizing and design. The System Design and Installation Guide is an additional resource.

Stainless Steel Flexible Chimney Liner


Warranty Information (171 KB, PDF)
Marketing Assets (447 KB, PDF)
  • Flex Liner Material - .006 316 Stainless Steel
  • Regular all-fuel SS Liner available in 4" to 8" diameters
  • Pellet Kits available in 3" to 4" diameters
  • Standard Flex Kit Lengths - 25' and 35'
  • Clearances - 0" between liner and masonry chimney interior with the insulation wrap
  • Can be installed on gas, oil or wood appliances
  • Insulation-wraps available in 10' lengths
  • Listed to ULC-S635 in Canada and UL 1777 in US
  • Limited Lifetime Warranty
Stainless Steel Flexible Liner IMG (4 MB, PDF)