DuraVent

DuraVent 20' Flex Pipe Length DuraFlex 316 Stainless Steel

$590.00
$590.00
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DuraVent 20' Flex Pipe Length DuraFlex 316 Stainless Steel

The DuraVent 20' DuraFlex 316 Stainless Steel Flex Pipe is a premium flexible chimney liner designed for dependable masonry chimney relining and high-efficiency venting. Manufactured from highly corrosion-resistant 316 stainless steel, this 20-foot chimney liner is ideal for wood-burning fireplaces, wood stoves, non-condensing gas appliances, oil-fired systems, and coal-burning appliances where enhanced corrosion protection is essential. Its lightweight, flexible construction allows easy installation through chimneys with minimal offsets while maintaining excellent draft and efficient flue gas flow. The liner is UL 1777 and ULC S635 listed, ensuring safe and code-compliant performance.

Engineered for long-lasting durability, the DuraFlex 316 stainless steel chimney liner protects masonry chimneys from heat, moisture, and corrosive combustion byproducts while improving overall venting efficiency. This 20-foot flexible chimney liner is an excellent choice for fireplace inserts, furnaces, boilers, and solid-fuel heating systems, delivering reliable performance in demanding installations. Backed by DuraVent’s trusted engineering, it provides a professional-grade chimney relining solution for both residential and commercial applications.

Features

      • Premium DuraVent DuraFlex 316 Stainless Steel Flex Pipe: High-quality 20-foot flexible chimney liner engineered for dependable masonry chimney relining and long-lasting venting performance.
      • Compatible with Solid Fuel, Gas & Oil Appliances: Designed for use with solid-fuel, non-condensing gas, and oil-fired appliances, including wood stoves, fireplace inserts, furnaces, and boilers.
      • Superior 316 Stainless Steel Construction: Manufactured from 316 stainless steel alloy to deliver exceptional durability and long-term resistance to harsh flue conditions.
      • Enhanced Corrosion Resistance: The 316 alloy chimney liner is proven to provide additional corrosion resistance when burning coal or sulfur-rich oil fuels, extending liner life.
      • Flexible Chimney Liner Design: Easily conforms to chimney pathways with minimal offsets, simplifying installation while maintaining efficient flue gas flow and proper draft.
      • Ideal for Coal-Burning Applications: Recommended where greater protection against corrosive combustion byproducts is required, making it an excellent coal chimney liner solution.
      • Improves Chimney Efficiency: Restores proper venting performance, enhances heating appliance efficiency, and helps reduce creosote and flue gas restrictions.
      • Reliable Chimney Restoration Solution: Perfect for chimney liner replacement, fireplace insert installations, and wood stove venting upgrades.
      • UL Listed for Safety: Part of the trusted DuraVent DuraFlex 316 series, UL 1777 and ULC S635 listed for safe, code-compliant chimney relining installations.

      Specifications

      Model Size Flex Length
      3DF316-20 3" I.D 20 ft.
      4DF316-20 4" I.D 20 ft.
      5DF316-20 5" I.D 20 ft.
      55DF316-20 5.5" I.D 20 ft.
      6DF316-20 6" I.D 20 ft.
      7DF316-20 7" I.D 20 ft.
      8DF316-20 8" I.D 20 ft.
      Materials 316 Stainless Steel
      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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