Metal-Fab 5.5" Diameter x 30' Length Stainless Steel Chimney Liner Flex Kit

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Metal-Fab provides complete and comprehensive venting solutions to the HVAC, Hearth and Plumbing markets.  Founded in 1958 on the premise that offering better products and services would be the key to our success.

Metal-Fab continues to operate today as a privately held entity with the same core values that lead to success while creating steady, stable growth over the past six decades.

Customer needs are the highest priority at Metal-Fab which is why every customer receives a unique experience while choosing from a full line of high-quality venting products for commercial, residential and industrial applications. 

Cutting-edge manufacturing systems, innovative designs, patent products, unmatched product quality, and a focus for detail have resulted in a leadership position within the industries Metal-Fab serves.  Our constant product improvement process and experience in developing and engineering products for safe, efficient appliance operation sets Metal-Fab apart from the competition.


Flexible Stainless Steel Chimney Liners intended for field installation into new or existing tile-lined or unlined masonry chimneys used for venting natural active Category I gas-fired, Type L oil-fired, and solid-fuel residential-type appliances in which maximum continuous flue gas temperatures do not exceed 1000°F.  Chimney liners are intended to be installed in accordance to the “Standard for Chimneys, Fireplaces, Vents, and Solid Fuel Burning Appliances,” NFPA 211; “National Fuel Gas Code,” NFPA 54.


  • Complete product line of individual components and vent kits.
  • 5.5" diameter and 30' length.
  • Built with tough 316L stainless steel, yet flexible enough to make tight turns.
  • Removable snout tee for easy assembly
  • Integral one-piece collar/top plate eliminates the need for a storm collar.
  • Insulation available in handy rolls.
  • Components for each kit are packaged together in one carton.
  • Limited Lifetime Warranty

Kit includes:

  • Specified Length of Stainless Steel Flex
  • Vent Cap
  • Top Plate
  • Connector 
  • Instructions


 Application For use with wood, pellet, coal, oil and gas-fired appliances.
Listings/Standards NFPA 211
UL 1777
ULC – S635
ULC – S636
Construction 5.5" 316L stainless steel
Diameters 5.5"
Length 30'


Clearance from single-wall connectors to combustible material shall be in accordance with NPFA 211 as shown in the table below.


  • These clearances apply unless a different clearance is specified by the appliance manufacturer.
  • These clearances do not apply if a listed wall penetration system is used.

Clearance between flex liner and masonry and between masonry and combustibles is as shown in the following table:


WARNING: Proposition 65