M-G DURAVENT 4BVWT Vent Wall Thimble Venting

( Brand: M-g Duravent ), ( Part Type: Wall ), ( Manufacturer Part Number: 4BVWT )

Review M G DURAVENT Mduravent Inch B vent Adjustable Wall Thimble Metal Venting

The Duravent 4BVWT B-Vent Wall Thimble is a high-performance venting solution designed for use with masonry or concrete chimneys. This thimble is an essential component of a B-vent system, which is a type of venting system commonly used with high-efficiency appliances such as gas water heaters and furnaces.

The 4BVWT is made from premium-grade, corrosion-resistant materials, including a 100% Type 304 stainless steel body and a 316L stainless steel cap. This ensures the durability and longevity of the thimble, even in harsh environments.

The thimble features a unique, tapered design that facilitates proper sealing between the chimney liner and the thimble, minimizing the risk of leaks and drafts. The tapered design also allows for easy installation and ensures a secure fit.

The 4BVWT comes with a built-in, adjustable rain cap that helps to keep out precipitation and debris, protecting the venting system from the elements. The cap is also designed to accommodate the use of a chimney cover, providing an additional layer of protection.

The thimble is tested and certified to meet the strictest industry standards, including ANSI/B111.3-2014 and UL 1778. This ensures that the 4BVWT provides reliable and efficient venting performance, while also ensuring the safety of the home and its occupants.

Overall, the Duravent 4BVWT B-Vent Wall Thimble is an ideal solution for homeowners looking for a durable, reliable, and efficient venting solution for their high-efficiency appliances. Its premium-grade materials, tapered design, and adjustable rain cap make it a top choice for contractors, installers, and homeowners alike.

Duravent 4BVWT B-Vent Wall Thimble is a venting solution designed for use with gas, propane, or oil appliances. This type of venting system is commonly used in residential applications. Here are some pros and cons of using Duravent 4BVWT B-Vent Wall Thimble for venting:

1. Aesthetically pleasing design: The B-vent system is known for its clean and unobtrusive appearance. The Duravent 4BVWT Thimble has a sleek design that blends well with the exterior of a house.

2. Easy installation: The thimble can be easily installed on the exterior wall, making it a popular choice for homeowners who prefer DIY projects.

3. Cost-effective: Compared to other venting systems, B-vent systems are generally less expensive to install and maintain.

4. Flexible venting: The B-vent system allows for greater flexibility in terms of venting length and height, making it suitable for various applications.

1. Limited venting height: The maximum venting height for a B-vent system is around 10 feet. This may not be suitable for all applications, especially those requiring taller venting.

2. Potential for drafts: The B-vent system relies on natural drafts to function properly. In areas with high wind or extreme weather conditions, drafts may cause issues.

3. Potential for backdrafting: If the appliance produces excessive negative pressure, it may cause backdrafting, which can lead to carbon monoxide entering the home.

4. Requires proper installation: Proper installation is crucial for the safe and efficient operation of a B-vent system. improper installation can lead to various issues.

The Duravent 4BVWT B-Vent Wall Thimble is a cost-effective and aesthetically pleasing venting solution for gas, propane, or oil appliances. Its easy installation and flexible venting make it a popular choice for many homeowners. However, its limited venting height and potential for drafts and backdrafting are important considerations. Proper installation is crucial to ensure safe and efficient operation.

If you're considering using the Duravent 4BVWT B-Vent Wall Thimble for venting, make sure to carefully consider the pros and cons and consult with a professional installer if you have any doubts. Proper installation and regular maintenance are essential for the safe and efficient operation of the system. Additionally, consider alternative venting solutions, such as power venting or direct venting, if you have specific venting requirements that cannot be met with a B-vent system.

Details:

This item is guaranteed to be unused with all original parts.

part #: 4bvwt prices

• $40.64-$47.53

specifications aerationaura:

• brand: M-g Duravent
• part type: Wall
• manufacturer part number: 4BVWT

payments aerationaura:

• wallet: Apple-pay
• credit card: Diners-club
• other

general aerationaura:

• Home Improvement > Heating, Cooling Air > Other Heating, Cooling Air
• condition: Open box

offer aerationaura:

• availability: In Stock
• started: November 17, 2025
• quantity: 1
• options: Ship-to-home
• best offers: True
• sold: 0

seller aerationaura:

• # reviews: 23090
• city: Mooresville, Indiana
• rating: 99.7%

returns aerationaura:

• policy: No Returns

shipping aerationaura:

• type: Calculated
• class: Standard
• transit: 4-11 Days
• carrier: USPS
• cost: $0.00
• service: USPS Ground Advantage

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