DuraVent | Quick Grip Firestop/Support UL Type B Gas Vent 3"-6" Inner Diameter

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Size: 3"

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Welcome to the world of DuraVent, where innovation meets safety and reliability. As the industry leader in venting solutions, we are proud to introduce our Quick Grip Firestop/Support UL Type B Gas Vent, designed to provide you with the utmost peace of mind for your HVAC and Hearth needs. Say goodbye to the worries of venting your gas appliances, and step into a world of excellence with DuraVent.

Our Quick Grip Firestop/Support UL Type B Gas Vent features DuraLock technology, ensuring a lock-tight connection that you can trust. Align the indicators, feel the ends grasp together, and hear the satisfying snap as the connection firmly locks into place. It's the assurance you need for a safe and efficient venting system.


  1. Safety First: With its double-wall construction and built-in air space, our gas vent provides permanent insulation, keeping the inner pipe hot and the outer pipe cool. Say goodbye to condensation and overheating worries.
  2. Rugged Reliability: Crafted from strong and durable galvanized steel, our venting system boasts uniform insulating air space and easy-to-connect joints.
  3. Fully Certified: Our Model BV and BVO Type B Gas Vent is tested and listed per UL 441, meeting the highest safety standards for installation.
  4. Easy Installation: Designed to support gas vent above the floor, this system is ideal for both single and multi-story buildings.
  5. High Capacity: It can support up to 30 feet of gas vent, ensuring compatibility with various gas appliances.

Key Features

  1. Quick and secure DuraLock connection technology.
  2. Strong and durable galvanized steel construction.
  3. Double-wall design for insulation and safety.
  4. UL-certified for peace of mind.
  5. Versatile installation above the floor.


DuraVent's Quick Grip Firestop/Support UL Type B Gas Vent is your go-to solution for various gas appliances. Whether it's natural gas fireplaces, gas-fired furnaces, boilers, water heaters, or wall and space heating applications, our venting system is designed to excel. It's compatible with both natural gas and liquid propane Category I appliances, making it incredibly versatile for your needs.



Model Size
3BVFSPU 3" I.D x 9" (A)
4BVFSPU 4" I.D x 10" (A)
5BVFSPU 5" I.D x 11" (A)
6BVFSPU 6" I.D x 12" (A)
Clearances 1" to combustibles in single and multi-family dwellings
Listings UL Listed to UL 441
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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Order Confirmation:

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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We believe that shopping should be easy, convenient, and most importantly, affordable. That's why we work hard to bring you the lowest prices on the products you love. But if you do happen to find a better deal elsewhere, we'll go the extra mile to make sure you get the best deal possible.

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