DuraVent 25' Flex Pipe DuraFlex Pro Stainless Steel Tee Kit Length
The DuraVent 25' Flex Pipe DuraFlex Pro Stainless Steel Tee Kit Length is a high-performance flexible chimney liner system designed for reliable masonry chimney relining, fireplace insert venting, and solid-fuel appliance installations. Built with premium 316 stainless steel, DuraFlex Pro features 20% more stainless steel per foot than many standard liners, providing exceptional strength, flexibility, and corrosion resistance. Its advanced flexible design allows smooth, problem-free installation in chimneys with multiple offsets and challenging layouts. Available in 3-inch through 12-inch diameters, this stainless steel chimney liner is listed to UL 1777 and ULC S635 standards for trusted safety and performance.
The DuraFlex Pro Tee Kit delivers efficient chimney draft, flue gas flow, and appliance performance while protecting chimney structures from heat, moisture, and corrosive combustion byproducts. Ideal for wood stoves, fireplace inserts, and chimney restoration projects, this 25-foot flexible stainless steel liner provides a durable, code-compliant venting solution for residential and commercial applications. With DuraVent’s proven engineering, it ensures dependable installation, easy maintenance, and long-lasting chimney protection.
Features
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DuraVent DuraFlex Pro 25' Stainless Steel Tee Kit: Premium 25-foot flexible chimney liner tee kit designed for professional masonry chimney relining, fireplace insert venting, and solid-fuel appliance installations.
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High-Quality 316 Stainless Steel Construction: Manufactured with durable 316 stainless steel alloy for excellent strength, flexibility, and superior corrosion-resistant chimney liner performance.
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Available in Multiple Diameters: Offered in 3-inch to 8-inch diameters to provide compatibility with various wood stoves, fireplace inserts, and heating appliance venting systems.
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Multiple Flex Length Options: Available in 15’, 20’, 25’, 30’, and 35’ lengths to meet different chimney relining and installation requirements.
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Flexible Tee Kit Design: Provides an efficient stainless steel chimney liner solution for connecting appliances and improving venting performance in existing chimney systems.
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Ideal for Offset Chimney Applications: DuraFlex Pro’s flexible construction allows easier installation through chimneys with multiple offsets and complex configurations.
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Enhances Chimney Draft & Efficiency: Helps maintain proper flue gas flow, ventilation, and heating appliance performance for safe operation.
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Professional Chimney Relining System: Perfect for masonry chimney restoration, fireplace insert upgrades, wood-burning stove liners, and stainless steel vent replacements.
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Durable Protection Against Corrosion: Helps resist damage from heat, moisture, creosote buildup, and corrosive combustion gases for long-lasting reliability.
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UL Listed Flexible Chimney Liner: Designed to meet UL 1777 and ULC S635 standards for dependable and code-compliant chimney liner installations.
Specifications
| Model |
Size |
Flex Length |
| 3DFPRO-25KT |
3" |
25 ft. |
| 4DFPRO-25KT |
4" |
25 ft. |
| 5DFPRO-25KT |
5" |
25 ft. |
| 55DFPRO-25KT |
5.5" |
25 ft. |
| 6DFPRO-25KT |
6" |
25 ft. |
| 7DFPRO-25KT |
7" |
25 ft. |
| 8DFPRO-25KT |
8" |
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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