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Free Shipping over $299 | No Sales Tax except WI and PA | Contact Us for Deals

DuraVent 3"-8" Inner Diameter DuraFlex Insert Adapter

SKU 3DFS-ADC
Original price $104.36 - Original price $124.82
Original price $104.36
$120.00
$120.00 - $144.00
Current price $120.00
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DuraVent 3"-8" Inner Diameter DuraFlex Insert Adapter

The DuraVent 3"-8" Inner Diameter DuraFlex Insert Adapter is a premium chimney liner connector engineered to create a secure connection between DuraFlex flexible stainless steel chimney liners and fireplace inserts or heating appliances. Compatible with 3-inch to 8-inch inner diameter DuraFlex liners, this adapter is ideal for chimney relining projects, helping ensure proper flue gas flow, chimney draft, and appliance efficiency for wood-burning, non-condensing gas, and oil-fired systems.

Designed for dependable performance in masonry chimney restoration, the DuraFlex Insert Adapter provides a durable, reliable connection for professional and residential installations. It works seamlessly with DuraFlex Pro, DuraFlex 316, DuraFlex 304, and DuraFlex SW chimney liners, supporting safe, code-compliant venting. This DuraVent accessory enhances the durability and performance of flexible chimney liner systems while simplifying fireplace insert installations and long-term chimney maintenance.

Features

  • Secure Fireplace Insert Connection: The DuraVent DuraFlex Insert Adapter is designed to securely connect DuraFlex flexible stainless steel chimney liners to fireplace inserts with a flat surface outlet.
  • Compatible with 3"–8" DuraFlex Liners: Fits 3-inch to 8-inch inner diameter DuraFlex chimney liners, making it ideal for a wide range of chimney relining applications.
  • Optimized for Flat Outlet Fireplace Inserts: Provides a reliable connection between the chimney liner and insert appliance, helping ensure proper flue gas flow and chimney draft.
  • Improves Chimney Venting Performance: Helps maintain heating appliance efficiency by creating a secure transition between the flexible liner and the insert outlet.
  • Durable Stainless Steel Chimney Accessory: Built for long-lasting performance in demanding wood-burning, non-condensing gas, and oil-fired venting systems.
  • Professional Chimney Relining Component: Ideal for masonry chimney restoration, fireplace insert installations, and flexible chimney liner upgrades.
  • Reliable DuraVent Installation Solution: A high-quality DuraVent chimney liner adapter engineered for safe, efficient, and code-compliant chimney venting system installations.

    Specifications

    Model Size
    3DFS-ADC 3" Inner Diameter
    4DFS-ADC 4" Inner Diameter
    5DFS-ADC 5" Inner Diameter
    55DFS-ADC 5.5" Inner Diameter
    6DFS-ADC 6" Inner Diameter
    7DFS-ADC 7" Inner Diameter
    8DFS-ADC 8" Inner Diameter
    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

    Downloads

    DuraVent 3"-8" Inner Diameter DuraFlex Insert Adapter