DuraVent 50' Flex Pipe Length DuraFlex 316 Stainless Steel
The DuraVent 50' Flex Pipe Length DuraFlex 316 Stainless Steel Chimney Liner is a high-performance flexible chimney liner designed for reliable masonry chimney relining and venting upgrades. Made from durable 316 stainless steel, this flexible liner provides exceptional corrosion resistance and is ideal for wood-burning stoves, fireplace inserts, coal appliances, non-condensing gas, and oil-fired heating systems. DuraFlex 316 offers superior strength and flexibility, allowing easier installation through chimneys with offsets while maintaining efficient flue gas flow and chimney draft. It is listed to UL 1777 and ULC S635 standards for safe, code-compliant chimney applications.
Built for long-lasting performance, the DuraFlex 316 stainless steel chimney liner helps protect masonry chimneys from heat, moisture, and corrosive combustion byproducts. Its lightweight yet durable design makes it an excellent choice for chimney restoration, fireplace insert installation, and vent replacement projects. With trusted DuraVent chimney liner technology, this 50-foot flexible liner delivers dependable safety, improved appliance efficiency, and professional-grade performance for residential and commercial venting systems.
Features
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DuraVent 50' DuraFlex 316 Stainless Steel Chimney Liner: A premium 50-foot flexible chimney liner designed for masonry chimney relining, fireplace insert installations, and professional venting upgrades.
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High-Quality 316 Stainless Steel Construction: Manufactured with durable 316 stainless steel alloy for enhanced corrosion resistance, strength, and long-lasting chimney liner performance.
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Superior Corrosion Protection for Coal & Sulfur Oils: The 316 stainless steel alloy provides additional corrosion resistance when burning coal or sulfur-containing oil fuels, helping extend liner service life.
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Compatible with Multiple Fuel Types: Designed for use with solid fuel appliances, non-condensing gas appliances, and oil-fired heating systems for versatile chimney venting applications.
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Flexible Chimney Liner Design: Easily navigates chimney offsets and tight spaces while supporting efficient flue gas flow, chimney draft, and appliance performance.
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Ideal for Chimney Relining Projects: Perfect for wood stove chimney liners, fireplace insert liners, masonry chimney restoration, and vent system replacements.
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Durable & Long-Lasting Venting Solution: Helps protect chimney structures from heat, moisture, creosote, and corrosive combustion byproducts.
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UL Listed Stainless Steel Liner: Meets UL 1777 and ULC S635 standards for safe, reliable, and code-compliant chimney liner installation.
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Professional-Grade DuraVent Quality: Engineered by DuraVent to provide dependable performance, easy installation, and improved heating system efficiency.
Specifications
| Model |
Size |
Flex Length |
| 7DF316-50 |
7" I.D |
50 ft. |
| 8DF316-50 |
8" I.D |
50 ft. |
| Materials |
316 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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