Description
When it comes to venting solutions, DuraVent stands unrivaled at the pinnacle of excellence. With a legacy of delivering top-notch products, we have solidified our reputation as the industry's leading provider for HVAC and Hearth markets. Our commitment to innovation, safety, and professionalism shines through in every product we offer.
Introducing the DuraVent 5" Inner Diameter Type B Gas Vent Increaser – a game-changer in the world of venting systems. Designed with precision engineering and equipped with our proprietary DuraLock system, this increaser guarantees a lock-tight connection like no other. As you witness the alignment indicators meet, feel the ends seamlessly grasp together, and hear the satisfying snap of a firm, secure connection, you'll understand why DuraVent is the go-to choice for professionals.
Crafted to withstand the rigors of job site demands, the inner wall of the Type B Gas Vent is ingeniously recessed to eliminate handling damage. But that's not all – our venting system is engineered to heat up rapidly, ensuring minimal condensation during operation, both in the appliance and vent system. Whether you require pipe lengths ranging from 6 to 60 inches or an array of adjustable and rigid fittings, DuraVent has you covered.
However, it's important to note that Type B gas vents are not suitable for wood-burning or coal applications, industrial ovens, exhaust ranges and hoods, grease or pollution ducting, or as free-standing exhaust vents for high-temperature applications. Safety and precision are paramount, and our product reflects that commitment.
Benefits:
- Effortless Expansion: Easily increase your vent diameter with our user-friendly design.
- Customization: Additional sizes are available through special orders to meet your specific needs.
- Durability: Crafted from high-quality aluminum for lasting performance.
- Versatility: Suitable for natural gas or liquid propane Category I and draft hood equipped appliances.
- Wide Range of Applications: Ideal for natural gas fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating applications.
- Quality Materials: Our aluminum inner wall and galvanized outer wall ensure longevity and reliability.
- Easy Installation: Twist-lock fittings for diameters 3" - 16", while screws are required for 14" and larger diameters.
Features:
- Use to increase vent diameter.
- Additional sizes are available through special orders.
- Color: Aluminum.
Applications:
- DuraVent’s Type B Gas Vent system. Use with natural gas or liquid propane Category I and draft hood equipped appliances, and appliances tested and listed to use Type B Gas Vent.
- Applications include natural gas fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating applications.
Materials and Construction:
- Round Type B Gas Vent 3” - 8” and oval 4” - 6”: Aluminum .012” inner wall, galvanized .018” outer wall.
- Round Type B Gas Vent 10” - 16”: Aluminum .016” inner wall, galvanized .021” outer wall.
- Round Type B Gas Vent 18” - 30”: aluminum .020” inner wall, galvanized .021” outer wall.
- 3”-16” diameters feature twist-lock fittings, and screws are required for 14” and larger diameters.
Specifications:
| Model | Size |
| 5GVX6 | 5" x 6" Inner Diameter x 6.75" Height |
| 5GVX7 | 5" x 7" Inner Diameter x 6.75" Height |
| 5GVX8 | 5" x 8" Inner Diameter x 6.75" Height |
| Clearances | 1" to combustibles in single and multi-family dwellings |
| Listings | UL Listed to UL 441 and UL 1777(MH6357), ULC listed to ULC S605 (CMH1276 & CMH1407). |
| Warranty | Limited-lifetime warranty |
Downloads:
- Download Product Catalog
- Download Installation Manual
- Download Typical Installations
- Download TypeB Gas Vent Specs Sheet
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 company’s research into solving problems with corrosion, when biofuels such as corn are used, led to the break-through patent for PelletVent Pro.

