DuraVent | AL Kit Flex Relining 35′ DuraFlex Type B Gas Vent Pipe 3″
Welcome to the future of efficient venting solutions with the DuraVent 35' DuraFlex AL Kit. In a world where the quality of your HVAC system can make or break your comfort, trust DuraVent, the industry leader in venting products. With over [Years in Busine
Welcome to the future of efficient venting solutions with the DuraVent 35′ DuraFlex AL Kit. In a world where the quality of your HVAC system can make or break your comfort, trust DuraVent, the industry leader in venting products. With over [Years in Business] years of expertise, we bring you a cost-effective and reliable solution that not only elevates your HVAC performance but also protects your masonry chimney from the harsh effects of condensation.
At DuraVent, we take pride in engineering products that redefine the standards of the industry. The DuraFlex AL Kit is no exception. With a strong focus on innovation and safety, this kit is designed to reline masonry chimneys for natural gas or liquid propane appliances, making it suitable for a wide range of applications, including natural gas fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating.
The heart of this kit lies in its aluminum inner pipe, which heats up rapidly and remains hot during operation, effectively eliminating condensation within your appliance and vent system. This not only ensures the longevity of your HVAC system but also enhances its efficiency. Plus, the DuraFlex AL Kit seamlessly connects to any brand of B-vent, saving you valuable time and money. And the best part? It’s proudly manufactured in the USA, guaranteeing top-notch quality.
Upgrade your HVAC system today with the DuraVent 35′ DuraFlex AL Kit, where reliability, efficiency, and innovation converge for the ultimate venting experience.
Benefits
- Efficient Heating: The aluminum inner pipe heats up quickly, ensuring your appliance operates at its peak efficiency.
- Condensation Control: Say goodbye to condensation issues, as this kit eliminates them, safeguarding your chimney.
- Cost-Saving Solution: Connects effortlessly to existing B-vents, saving you installation time and homeowner expenses.
- Trusted American Quality: Made entirely in the USA for unwavering reliability.
- Versatile Applications: Ideal for various gas appliances, including fireplaces, furnaces, boilers, and more.
Key Features
- Rapid Heating: The aluminum inner pipe heats up faster, enhancing performance.
- Condensation Elimination: Keeps your appliance and vent system free from damaging condensation.
- Easy Installation: Connects seamlessly to existing B-vents, reducing installation time and costs.
- Made in the USA: Ensures top-quality craftsmanship and reliability.
- Complete Kit: Includes essential components like the top plate, cap, mortar sleeve, and aluminum length.
Applications
The DuraVent 35′ DuraFlex AL Kit is your go-to choice for a range of applications:
- Natural gas fireplaces
- Gas-fired furnaces
- Boilers
- Water heaters
- Wall or space heating applications
Specifications
| Model | Size | Flex Length |
| 3DFA-35K | 3″ I.D | 35 ft. |
| 4DFA-35K | 4″ I.D | 35 ft. |
| 5DFA-35K | 5″ I.D | 35 ft. |
| 55DFA-35K | 5.5″ I.D | 35 ft. |
| 6DFA-35K | 6″ I.D | 35 ft. |
| 7DFA-35K | 7″ I.D | 35 ft. |
| 8DFA-35K | 8″ I.D | 35 ft. |
| Vent Construction | Double-Wall | |
| Vent Type | Type B Gas Vent | |
| Materials & Const. | 010 aluminum (2-ply of .005) | |
| Clearance | 0 clearance to masonry | |
| Listings | Listed to UL 1777 and ULC S635 | |
| Warranty | Limited Lifetime Warranty |
Downloads
- Product Catalog
- Product Warranty
- Installation Manual
- Typical Installations
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 companys research into solving problems with corrosion, when biofuels such as corn are used, led to the break-through patent for PelletVent Pro.

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