Selkirk 6"/8" Flue Thimble Kit (Saf-T Liner)

Size: 6-Inch

Estimated Arrival: Between and . (To All Contiguous States)

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Selkirk 6"/8" Flue Thimble Kit (Saf-T Liner 304L SS)

In the last 20 years, thousands of Saf-T Liner systems have been installed. Each system is built to last. We offer a lifetime guarantee because we manufacture products that are simple to install and perform reliably year after year.

Saf-T Thimble is Heatfab’s UL-listed through-the-wall assembly. It provides protection from the heat when the connector must pass through a combustible wall between the appliance and the chimney. Designed for use in modern building of conventional construction with walls between 5 and 10 inches in thickness, easy-to-install Saf-T Thimble shields any construction material from heat. Adaptable to new or existing masonry chimneys, the two-part Saf-T Thimble features an insulated stainless steel wall enclosure and an interior heavy-gauge convection heat shield.

  • 304L Stainless Steel for gas or solid fuel
  • 316L Stainless Steel for fossil fuels including coal and oil
  • Easy to install on fireplaces, inserts and appliances
  • Continuous-seam welding with tapered male and female ends for ease of installation
  • Saf-T Wrap is a ceramic-fiber insulation with a reflective aluminum coating and snap-lock closure to speed installation
  • Venting Top Kit can bring a noncompliant masonry chimney to code
  • Custom sizes available upon request
  • Smart Choice warranty on all components


  • Listed to UL 1777 (Saf-T Liner installed with Saf-T Wrap)

Product Code
3006 6" - 5 and 6 Flue Thimble Kit
3008 8" - 7 and 8 Flue Thimble Kit

CA Residents: 
See Prop 65 WARNING.


Lifetime Limited Warranty

Refer to the Smart Choice Warranty for full warranty details.