DuraVent 35' Flex Pipe Length DuraFlex 304 Stainless Steel
The DuraVent 35' DuraFlex 304 Stainless Steel Flex Pipe is a durable flexible chimney liner designed for reliable masonry chimney relining and high-performance venting applications. Manufactured from quality 304 stainless steel, this 35-foot chimney liner is ideal for wood-burning fireplaces, wood stoves, non-condensing gas appliances, and oil-fired heating systems where minimal chimney offsets are present. Its lightweight and flexible construction allows easier installation while providing excellent corrosion resistance and long-lasting durability. The DuraFlex 304 liner is UL 1777 and ULC S635 listed, delivering trusted safety and code-compliant chimney performance for residential and commercial installations.
Engineered for dependable chimney restoration, the DuraFlex 304 stainless steel chimney liner improves draft efficiency while helping protect masonry chimneys from heat, moisture, and corrosive flue gases. This 35-foot flexible chimney liner is an excellent solution for fireplace inserts, furnaces, boilers, and oil heating appliances, offering superior installation flexibility and reliable operation. Backed by DuraVent’s proven engineering, it provides a professional-grade venting solution for upgrading or replacing existing chimney systems.
Features
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DuraVent 35' DuraFlex 304 Stainless Steel Flex Pipe: Premium 35-foot flexible chimney liner designed for reliable masonry chimney relining and professional venting installations.
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Durable 304 Stainless Steel Construction: Manufactured from high-quality 304 stainless steel for excellent corrosion resistance, strength, and long-lasting chimney liner performance.
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Compatible with Multiple Fuel Types: Designed for use with solid fuel, non-condensing gas, and oil-fired appliances, providing a versatile chimney venting solution for various heating systems.
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Flexible Chimney Liner Design: The flexible stainless steel chimney liner easily adapts to masonry chimney pathways with minimal offsets, simplifying installation while maintaining efficient flue gas flow.
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35-Foot Extended Flex Length: Ideal for taller chimney applications, replacement liner installations, and complete chimney restoration projects requiring additional liner length.
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Improves Draft & Venting Efficiency: Helps enhance chimney performance, support proper draft, and protect masonry flues from heat, moisture, and corrosive combustion byproducts.
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Ideal for Wood, Gas & Oil Heating Systems: Suitable for wood stoves, fireplaces, fireplace inserts, furnaces, boilers, and oil heating appliances.
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UL Listed Chimney Liner System: Part of the trusted DuraVent DuraFlex 304 series, featuring UL 1777 and ULC S635 listings for safe and compliant chimney relining applications.
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Professional Chimney Upgrade Solution: Provides a dependable stainless steel chimney liner replacement option for residential and commercial venting needs.
Specifications
| Model |
Size |
Flex Length |
| 3DF304-35 |
3" I.D |
35 ft. |
| 4DF304-35 |
4" I.D |
35 ft. |
| 5DF304-35 |
5" I.D |
35 ft. |
| 55DF304-35 |
5.5" I.D |
35 ft. |
| 6DF304-35 |
6" I.D |
35 ft. |
| 7DF304-35 |
7" I.D |
35 ft. |
| 8DF304-35 |
8" I.D |
35 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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