DuraVent

DuraVent 25' Flex Pipe Length DuraFlex 304 Stainless Steel Tee Kit

$917.00
$917.00
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DuraVent 25' Flex Pipe Length DuraFlex 304 Stainless Steel Tee Kit

The DuraVent 25' DuraFlex 304 Stainless Steel Tee Kit is a premium flexible chimney liner kit designed for dependable masonry chimney relining and efficient venting in residential and commercial heating systems. Featuring a 25-foot 304 stainless steel chimney liner, this tee kit is ideal for wood-burning fireplaces, wood stoves, non-condensing gas appliances, and oil-fired heating equipment with minimal chimney offsets. Its lightweight, flexible construction simplifies installation while providing excellent corrosion resistance and long-lasting durability. The DuraFlex 304 system is UL 1777 and ULC S635 listed, ensuring safe, code-compliant performance for professional chimney installations.

Designed for reliable chimney restoration and venting upgrades, the DuraFlex 304 Tee Kit promotes smooth flue gas flow while helping protect masonry chimneys from heat, moisture, and corrosive byproducts. The included tee connection provides a secure transition and convenient access for maintenance, making it an excellent solution for fireplace inserts, furnaces, boilers, and oil heating systems. Built with DuraVent’s trusted engineering, this stainless steel chimney liner kit delivers dependable performance, installation flexibility, and long-term reliability

Features

  • DuraVent 25' DuraFlex 304 Stainless Steel Tee Kit: Complete 25-foot flexible chimney liner tee kit engineered for professional masonry chimney relining and vent system upgrades.
  • Premium 304 Stainless Steel Construction: Manufactured from 304 stainless steel for outstanding corrosion resistance, durability, and long-lasting chimney vent performance.
  • 25-Foot Flexible Chimney Liner: Includes a 25-foot stainless steel flex pipe designed to simplify installations in masonry chimneys with minimal offsets.
  • Available in 3" to 8" Diameters: Offered in 3", 4", 5", 6", 7", and 8" diameter options to fit a wide range of wood stoves, fireplaces, furnaces, boilers, and oil appliances.
  • Multiple Flex Length Options: Available in 15', 20', 25', 30', and 35' lengths to accommodate different chimney heights and venting requirements.
  • Ideal for Wood, Gas & Oil Appliances: Designed for solid fuel, non-condensing gas, and oil-fired heating systems, providing versatile chimney liner performance.
  • Improves Chimney Draft & Efficiency: Helps restore aging chimneys, improve flue gas flow, and enhance overall heating appliance performance.
  • Professional Chimney Relining Solution: Flexible design and included tee connection make installation and maintenance easier for chimney restoration projects.
  • UL Listed Chimney Liner System: Part of the trusted DuraVent DuraFlex 304 product line, UL 1777 and ULC S635 listed for safe and code-compliant installations.

    Specifications

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