DuraVent - 4"-8" Inner Diameter Type B Gas Vent Reduction Tee

Save $35.67
DuraVentSKU: 4GVTR3

Sale price$142.68 Regular price$178.35
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Size: 4"
Increaser Tee: 4" x 3"

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Welcome to the pinnacle of venting solutions – DuraVent, the undisputed leader in the HVAC and Hearth markets. Our commitment to innovation, safety, and professionalism shines through in every product we offer. Now, introducing the DuraVent 4"-8" Type B Gas Vent Reduction Tee, an engineering marvel designed to elevate your venting experience.


  1. Secure Connection: Our DuraLock system ensures a snug and secure connection. Witness the alignment indicators meeting, feel the ends grasp together, and hear the reassuring snap as the connection firmly locks into place.

  2. Built for Tough Conditions: DuraVent Type B Gas Vent is crafted to withstand the rigors of the job site. The inner wall is thoughtfully recessed, eliminating damage during handling.

  3. Rapid Heating: Engineered for swift heating, this vent stays hot during appliance operation, minimizing condensation in both the appliance and the vent system.

  4. Versatile Sizing: Available in multiple lengths, from 6 to 60 inches, and equipped with a full range of adjustable and rigid fittings, our vent suits various applications.

  5. Safety First: While our Type B gas vents are a fantastic choice for many applications, they are not suitable for wood-burning or coal setups, industrial ovens, exhaust ranges and hoods, grease or pollution ducting, or free-standing exhaust vents for high-temperature applications.

  6. Branch Swivel Design: Easily attach smaller pipes to the branch and larger pipes to the body. Perfect for a 90° offset or combining connectors from multiple appliances into a common vent.

  7. Wide Applications: DuraVent’s Type B Gas Vent Reduction Tee is compatible with natural gas or liquid propane Category I and draft hood-equipped appliances. It's a versatile solution suitable for natural gas fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating applications.


  • Attaches smaller pipe to branch and larger pipe to the body.
  • Use for a 90° offset or to combine connectors from two or more appliances into a common vent.
  • Branch swivels for alignment.


Model Size Increaser
4GVTR3 4" I.D 4" x 3"
5GVTR3 5" I.D 5" x 3"
5GVTR4 5" I.D 5" x 4"
6GVTR3 6" I.D 6" x 3"
6GVTR4 6" I.D 6" x 4"
6GVTR5 6" I.D 6" x 5"
7GVTR3 7" I.D 7" x 3"
7GVTR4 7" I.D 7" x 4"
7GVTR5 7" I.D 7" x 5"
7GVTR6 7" I.D 7" x 6"
8GVTR4 8" I.D 8" x 4"
8GVTR5 8" I.D 8" x 5"
8GVTR6 8" I.D 8" x 6"
8GVTR7 8" I.D 8" x 7"
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


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.

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Upon placing your order, you will promptly receive an email confirmation. Subsequently, we will conduct a thorough inventory check to ensure all items are in stock and available for immediate shipment. If your order aligns with the advertised delivery timeframe, we will promptly process it for shipment to our warehouse. In cases where the expected delivery time extends beyond the advertised timeframe, we will reach out to you via email and/or phone for confirmation.

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Within one business day of your item being shipped, you will receive an email confirmation containing a tracking number. If you do not receive tracking information within six business days of placing your order, please don't hesitate to get in touch with us for assistance.

Estimated Time of Arrival:

Our typical delivery timeframe ranges from 2 to 10 business days. Custom-made products generally require 3 to 5 weeks for delivery. If the expected delivery date for your order would fall outside of the advertised 2-10 business day time frame, our customer service team will contact you to ensure your agreement with the revised timeline.

Covered Areas:

Please note that all estimated delivery dates and shipping costs advertised on our website apply exclusively to the Contiguous United States. For inquiries regarding shipping to Hawaii or Alaska, kindly reach out to our customer service team. While we do not offer direct shipping to Canada, we are more than willing to ship your order to the freight carrier of your choice.


It is very important that you inspect the packaging of your items when they arrive and check if you received all boxes listed on the delivery receipt. If you notice any damage or shortage of packages, you must make note of it on the bill of lading, take pictures, and refuse delivery. Your note should say "refused due to damage". You must also take photos of all sides of the box and send them to us within 2 days. If there are no damages visible before opening the box, you must note "subject to further inspection may contain concealed damage". If you notice any damage after receiving the delivery, do not throw the box away, and contact us with the photos. After we receive information from you about the refused delivery or concealed damage, we immediately initiate a claim with the shipping company or with the manufacturer. After the claim is fully processed, we ship all replacements at absolutely no cost to you.

Cancellations & Refunds:

We offer free order cancellations before the shipping label or Bill of Lading is generated, or prior to the commencement of production for custom orders. Please note that custom-made items are not eligible for refunds once production has begun. To be eligible for a return, the item must be unused and in its original condition, with all packaging intact and in perfect condition. Orders delivered outside of the United States are not eligible for refunds. If your order arrives damaged, please refer to the "Damages" section. Our refund policy extends for 30 days. If 30 days have elapsed since your purchase, regrettably, we cannot process a refund. Prior to returning an item, please contact us to discuss shipping details. All refunds will be credited to the original credit card or PayPal account used for the purchase, within two days of receiving the returned items at our warehouse.

Please contact sales@belleflame.com for any questions regarding shipping time.

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