DuraVent

DuraVent 25' Flex Pipe Length DuraFlex 304 Stainless Steel

$659.00
$659.00
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DuraVent 25' Flex Pipe Length DuraFlex 304 Stainless Steel

The DuraVent 25' DuraFlex 304 Stainless Steel Flex Pipe is a dependable flexible chimney liner designed for efficient masonry chimney relining in residential and commercial heating systems. Constructed from durable 304 stainless steel, this 25-foot chimney liner is ideal for wood-burning fireplaces, wood stoves, non-condensing gas appliances, and oil-fired heating equipment where minimal chimney offsets exist. Its lightweight, flexible construction allows for straightforward installation while delivering excellent corrosion resistance and reliable venting performance. The DuraFlex 304 system is UL 1777 and ULC S635 listed, ensuring trusted safety and code-compliant installation.

Designed to improve chimney efficiency, the DuraFlex 304 stainless steel chimney liner promotes smooth flue gas flow while protecting masonry chimneys from moisture, heat, and corrosive byproducts. This 25-foot flexible chimney liner is an excellent choice for fireplace inserts, furnaces, boilers, and oil heating systems, offering long-lasting durability and dependable operation. Whether replacing an aging liner or upgrading an existing venting system, DuraVent DuraFlex 304 provides professional-grade quality and reliable chimney performance

Features

  • DuraVent 25' DuraFlex 304 Stainless Steel Flex Pipe: Premium 25-foot flexible chimney liner designed for dependable masonry chimney relining and long-lasting vent system performance.
  • 304 Stainless Steel Construction: Manufactured from high-quality 304 stainless steel for superior corrosion resistance, durability, and reliable chimney venting.
  • Compatible with Multiple Fuel Types: Designed for use with solid fuel, non-condensing gas, and oil-fired appliances, making it a versatile chimney liner for a variety of heating systems.
  • Flexible Chimney Liner Design: The flexible stainless steel liner easily adapts to masonry chimneys with minimal offsets, simplifying installation while maintaining efficient flue gas flow.
  • Enhances Chimney Efficiency: Improves draft performance and helps protect masonry chimneys from heat, moisture, and corrosive flue byproducts.
  • Ideal for Wood, Gas & Oil Heating Systems: Suitable for wood stoves, fireplaces, fireplace inserts, furnaces, boilers, and oil heating appliances.
  • UL Listed Chimney Liner: Part of the trusted DuraVent DuraFlex 304 system, UL 1777 and ULC S635 listed for safe, code-compliant chimney relining applications.
  • Professional Chimney Restoration Solution: Perfect for chimney liner replacement, fireplace vent upgrades, and masonry chimney restoration projects

Specifications

Model Size Flex Length
3DF304-25 3" I.D 25 ft.
4DF304-25 4" I.D 25 ft.
5DF304-25 5" I.D 25 ft.
55DF304-25 5.5" I.D 25 ft.
6DF304-25 6" I.D 25 ft.
7DF304-25 7" I.D 25 ft.
8DF304-25 8" I.D 25 ft.
Materials 304 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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