DuraVent 25' Flex Pipe Length DuraFlex 316 Stainless Steel Tee Kit
The DuraVent 25' DuraFlex 316 Stainless Steel Tee Kit is a high-quality flexible chimney liner system engineered for reliable masonry chimney relining and efficient venting. Featuring durable 316 stainless steel construction, this 25-foot chimney liner tee kit provides excellent corrosion resistance for wood stoves, fireplace inserts, solid-fuel appliances, non-condensing gas systems, oil-fired appliances, and coal-burning applications. The flexible liner design allows easier installation through chimneys with minimal offsets, while the integrated tee connection provides convenient cleanout access and dependable performance. This DuraFlex 316 Tee Kit is UL 1777 and ULC S635 listed for safe, professional chimney venting installations.
Designed for long-term durability, the DuraFlex 316 stainless steel chimney liner kit helps protect masonry chimneys from heat, moisture, and corrosive flue gases while improving draft and appliance efficiency. Ideal for chimney restoration, fireplace insert installation, and chimney liner replacement, this 25-foot flexible stainless steel liner delivers a dependable solution for residential and commercial heating systems. Backed by DuraVent’s trusted engineering, it provides superior performance in demanding venting environments
Features
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DuraVent 25' DuraFlex 316 Stainless Steel Tee Kit: Complete 25-foot flexible chimney liner tee kit designed for dependable masonry chimney relining, fireplace insert venting, and chimney restoration projects.
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Premium 316 Stainless Steel Construction: Manufactured with corrosion-resistant 316 stainless steel alloy for superior durability, strength, and extended service life in demanding venting applications.
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Flexible Chimney Liner System: Provides installation flexibility through chimneys with offsets while maintaining efficient flue gas flow and reliable chimney draft performance.
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Integrated Stainless Steel Tee Connection: Includes a durable chimney liner tee fitting that allows easy appliance connection and convenient access for chimney cleaning and maintenance.
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Multiple Diameter Options Available: Offered in 3" to 8" diameters to support various wood stoves, fireplace inserts, solid-fuel appliances, gas appliances, and oil heating systems.
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Multiple Flex Length Choices: Available in 15’, 20’, 25’, 30’, and 35’ lengths to accommodate different chimney heights and installation requirements.
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Designed for Solid Fuel & Heating Applications: Ideal for wood-burning appliances, non-condensing gas appliances, oil-fired systems, and coal-burning applications requiring enhanced corrosion resistance.
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Improved Chimney Performance & Safety: Helps protect masonry chimneys from heat, moisture, and corrosive combustion byproducts while supporting efficient appliance operation.
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UL Listed DuraFlex 316 Series: Engineered to meet UL 1777 and ULC S635 standards for trusted chimney liner safety and performance.
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Professional Chimney Relining Solution: A reliable stainless steel chimney liner kit for residential and commercial chimney repair, fireplace insert installation, and venting upgrades.
Specifications
| Model |
Size |
Flex Length |
| 3DF316-25KT |
3" I.D |
25 ft. |
| 4DF316-25KT |
4" I.D |
25 ft. |
| 5DF316-25KT |
5" I.D |
25 ft. |
| 55DF316-25KT |
5.5" I.D |
25 ft. |
| 6DF316-25KT |
6" I.D |
25 ft. |
| 7DF316-25KT |
7" I.D |
25 ft. |
| 8DF316-25KT |
8" I.D |
25 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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