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Classic Style Duravent | Duraflex Sw Stainless Steel 30' Flex Pipe Length Next Gen [nBYFcOXi]

$65.99 $211.99 -69%

Elevate your home's safety, efficiency, and style with the DuraVent DuraFlex SW 30' Stainless Steel Chimney Liner. Crafted by the industry leader, DuraVent, this chimney liner is a testament to innovation, quality, and peace of mind. With an unwaveri

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Classic Style Duravent | Duraflex Sw Stainless Steel 30' Flex Pipe Length Next Gen [nBYFcOXi]

Elevate your home's safety, efficiency, and style with the DuraVent DuraFlex SW 30' Stainless Steel Chimney Liner. Crafted by the industry leader, DuraVent, this chimney liner is a testament to innovation, quality, and peace of mind. With an unwavering commitment to excellence, DuraVent has solidified its reputation as the premier company in the venting industry.

The DuraFlex SW chimney liner boasts a smooth inner wall design that ensures maximum appliance efficiency. Say goodbye to restrictions that hinder flue gas flow and the buildup of deposits. The absence of ridges not only streamlines airflow but also simplifies cleaning and maintenance, making it a dream come true for homeowners and professionals alike. Rest assured, this chimney liner is listed to UL 1777, meeting the highest safety standards.

Tailor your chimney liner precisely to your needs. DuraVent offers custom lengths starting from 10', and for those requiring larger diameters, the 9"-12" options are also available through custom orders. With DuraVent, flexibility and customization are at your fingertips. Plus, for all 9"-12" flex systems, Ventinox components are the perfect complement.

Benefits

  1. Enhanced Efficiency: The smooth inner wall design maximizes appliance efficiency, helping you save on energy costs.
  2. Easy Maintenance: Say goodbye to ridges that trap debris – cleaning and maintenance have never been simpler.
  3. Safe and Certified: UL 1777 listing guarantees safety and quality, giving you peace of mind.
  4. Customization: Tailor your chimney liner to your specific requirements, ensuring a perfect fit.
  5. Versatile Applications: Suitable for gas, wood pellet, oil, or wood appliances, including fireplace inserts, furnaces, boilers, and water heaters.

Key Features

  1. Smooth Inner Wall: Promotes optimal airflow and easy maintenance.
  2. UL 1777 Listed: Complies with the highest safety standards.
  3. Custom Lengths: Customize your liner from 10' and up.
  4. Multiple Diameters: Options for 3"-8" and 9"-12" diameters.
  5. Lifetime Warranty: Backed by a limited lifetime warranty for your peace of mind.

Applications

DuraFlex SW smooth wall flexible chimney lining is perfect for masonry chimneys, ensuring top performance with gas, wood pellet, oil, or wood appliances. Its versatile applications include fireplace inserts, furnaces, boilers, and water heaters, making it a go-to choice for professionals and homeowners alike.

Specifications

Model Size Flex Length
3DFSW-30 3" I.D 30 ft.
4DFSW-30 4" I.D 30 ft.
5DFSW-30 5" I.D 30 ft.
55DFSW-30 5.5" I.D 30 ft.
6DFSW-30 6" I.D 30 ft.
7DFSW-30 7" I.D 30 ft.
8DFSW-30 8" I.D 30 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

Downloads

About the Manufacturer

Consistently the first to market with new innovations in venting systems, DuraVent has captured a leadership position in emerging markets. DuraVent has patents for several products and continues to design safe and technologically advanced venting.The company’s research into solving problems with corrosion, when biofuels such as corn are used, led to the break-through patent for PelletVent Pro.

What Our Customers Say

January 17, 2026

Absolutely no complaints!

Couldn't be more impressed with this at all, at all, at all.

- Elffin Y..

January 17, 2026

Absolutely no complaints!

I'm impressed with the fantastic and the great quality.

- Bendigeidfran J..

January 17, 2026

Absolutely no complaints!

This product is simply and truly so very, so great.

- Elffin Z..

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