DuraVent - 7" Height DuraBlack Increaser

Save $11.35
DuraVentSKU: 5DBK-X6

Sale price$45.42 Regular price$56.77
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Size: 5"-6"

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When it comes to optimizing your woodstove's ventilation system, you deserve nothing but the best. Introducing the DuraVent 7" Height DuraBlack Increaser – the answer to your stovepipe enhancement needs. In a world where quality and functionality are paramount, DuraVent stands tall as a trusted brand delivering exceptional solutions.

Constructed with meticulous precision, DuraBlack offers an economical, drip-free, single-wall stovepipe solution that seamlessly marries form and function. Crafted to meet DuraVent's exacting standards, it boasts die-formed end fittings that ensure a snug fit without any annoying leaks. Say goodbye to the hassle of cutting and crimping, thanks to its adjustable lengths. Whether you opt for the 24-gauge painted steel version or the 22-gauge stainless steel variant, DuraBlack ensures that your woodstove enjoys superior ventilation.

Designed for efficiency, this increaser is the missing link in your woodstove's venting puzzle. It's your bridge from a smaller appliance flue outlet to a larger-diameter chimney or stovepipe, offering a streamlined path for those rising plumes of warmth. Say hello to hassle-free wood-burning experiences and coziness redefined.


  • Effortless Installation: DuraVent's DuraBlack Increaser eliminates the need for cumbersome cutting and crimping, making installation a breeze.
  • Superior Materials: Crafted with durable 24-gauge steel (painted black) or 22-gauge stainless steel, ensuring longevity and reliability.
  • Leak-Free Design: Die-formed end fittings guarantee a secure, drip-free connection, minimizing maintenance.
  • Versatile Sizing: Available in various sizes to accommodate your specific woodstove requirements.
  • Uncompromising Quality: Backed by DuraVent's commitment to excellence and a limited-lifetime warranty, you can trust in long-term performance.
  • Seamless Integration: Works harmoniously with DuraVent's chimney products like DuraTech, DuraTech Canada, DuraPlus, or DuraTech Premium.
  • Enhanced Efficiency: Achieve optimal venting, maximizing your woodstove's heating potential.


  • Use to increase from a smaller appliance flue outlet to a larger diameter chimney or stovepipe.

Materials and Construction:

  • DuraBlack: 24-gauge steel construction
  • Lock-seamed
  • Painted Black
  • DuraBlack Stainless Steel: 22-gauge 430 stainless steel.
  • Lock-seamed
  • Non-painted


Model Dimensions
5DBK-X6 6.125" (A) x 5" (B) x 7" Height
6DBK-X7 7.125" (A) x 6" (B) x 7" Height
7DBK-X8 8.125" (A) x 7" (B) x 7" Height
8DBK-X10 10.125" (A) x 8" (B) x 7" Height
9DBK-X10 10.125" (A) x 9" (B) x 7" Height
Applications Single-Wall Interior Stovepipe for connecting woodstoves to manufactured chimney
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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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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