DuraVent

DuraVent 6" Factory Built DuraFlex 304 Stainless Steel Reline Kit

$1949.00
$1949.00
Sale
Size (Ft.)

DuraVent 6" Factory Built DuraFlex 304 Stainless Steel Reline Kit

The DuraVent 6" Factory Built DuraFlex 304 Stainless Steel Reline Kit is a reliable chimney relining solution designed to improve the safety and performance of factory-built chimney systems. Manufactured with durable 304 stainless steel, this flexible chimney liner kit is ideal for wood-burning appliances, non-condensing gas appliances, and oil-fired heating systems where minimal chimney offsets are present. The lightweight DuraFlex 304 design provides excellent corrosion resistance, installation flexibility, and long-lasting venting performance.

Engineered for professional factory-built chimney restoration and fireplace insert installations, the DuraFlex 304 stainless steel chimney liner system helps maintain proper draft, improve flue efficiency, and protect chimney structures from heat and corrosive combustion byproducts. Listed to UL 1777 and ULC S635 standards, this 6-inch chimney liner kit delivers dependable, code-compliant performance for wood stoves, fireplace inserts, and solid-fuel heating applications. DuraVent’s trusted DuraFlex technology provides a durable upgrade for safer and more efficient chimney operation.

Features

  • DuraVent 6" Factory-Built DuraFlex 304 Stainless Steel Reline Kit: Professional chimney relining system designed specifically for upgrading factory-built chimneys used with solid-fuel appliances in the USA.
  • 304 Stainless Steel Chimney Liner Construction: Manufactured from durable 304 stainless steel to provide excellent corrosion resistance, strength, and reliable long-term chimney performance.
  • Designed for Wood-Burning Insert Installations: Critical for maintaining performance and safety when installing a wood-burning insert into an existing UL-127-listed factory-built fireplace.
  • Improves Chimney Draft & Efficiency: Helps restore proper venting performance, enhance flue gas flow, and support efficient operation of solid-fuel heating appliances.
  • Flexible Chimney Relining Solution: The 6-inch flexible stainless steel liner allows easier installation while adapting to existing factory-built chimney configurations.
  • Compatible Chimney Size Range: Designed for chimneys with a minimum 8-inch inner diameter and a maximum 14-inch outer diameter for proper liner fit and installation.
  • Factory-Built Fireplace Upgrade Kit: Provides a reliable chimney liner replacement solution for fireplace inserts, wood stoves, and solid-fuel appliance venting systems.
  • Enhances Chimney Safety: Helps protect existing chimney structures from heat, combustion byproducts, and potential venting issues caused by outdated chimney systems.
  • Code-Compliant DuraFlex System: Part of the trusted DuraVent DuraFlex 304 series, designed for professional chimney restoration and safe solid-fuel applications.

Specifications

Model Size Flex Length
6DF304-25KFB 6" I.D 25 ft.
6DF304-35KFB 6" I.D 35 ft.
Construction Single-Wall
Clearance 0” clearance for gas, oil, and pellet applications.
Clearance 1” clearance to masonry for wood-burning
Listings Listed to UL 1777 and ULC S635 (MH45609).
Warranty Limited-lifetime warranty

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