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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


Smart Choice Warranty (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)