DuraVent - DuraTech 18" Chimney Pipe - Stainless Steel

Save $50.01
DuraVentSKU: 12DT-18SS

Regular price$450.15 Sale price$500.16
Flash Sale is ON! Free Shipping & Returns on All Orders. Get 15% off with the Code: FLASH15 for purchase over $199 and 19% off with the Code: FLASH19 for purchase over $8999. Best Deal Ever! Need Help? Call 800-466-4712 or mail us at sales@belleflame.com
Diameter Size: 12"
⛟ Estimated Delivery Date: Between and to all states excl. Alaska & Hawaii.


When it comes to the safety and performance of your home's heating appliances, compromise is not an option. The DuraVent DuraTech 18" Chimney Pipe in Stainless Steel sets the gold standard for venting systems. As the industry leader, DuraVent has consistently delivered innovative, safe, and professional products for the HVAC and Hearth markets, and the DuraTech Chimney Pipe is no exception.

This chimney pipe is engineered to provide the ultimate in safety and performance. Featuring refractory insulation encased between dual walls, it ensures that the outer wall of the chimney remains cool, while maintaining high flue gas temperatures for optimal draft performance. What sets DuraTech apart is its 25% thicker inner wall compared to competitive chimneys, offering an additional margin of safety. With DuraTech, there's no need for locking bands or mechanical fasteners. It's all about convenience and peace of mind.


  • Uncompromised Safety: DuraTech is designed for appliances that have been rigorously tested and listed for use with a 1700°F rated chimney system. Whether you have a zero-clearance or masonry fireplace, furnace, boiler, water heater, range, or any appliance fueled by oil, coal, gas, or wood, this chimney pipe is up to the task.

  • Top-Notch Certification: Tested to UL 103 and listed under MH 7399, the DuraTech Chimney Pipe meets the highest industry standards. It's not just a product; it's a promise of quality and safety.

  • Built to Last: DuraTech offers two options for its outer wall: galvalume (GA) and stainless steel (SS), while the inner wall is always stainless steel. This combination ensures durability and longevity, giving you peace of mind for years to come.

  • Easy Installation: DuraTech's design takes the hassle out of installation. No locking bands or mechanical fasteners are required, making the process smoother and more efficient.

  • High-Temperature Performance: This chimney pipe is no stranger to extreme heat. It's tested and listed for continuous operation at 1000°F flue gas temperatures, can handle one hour at 1400°F, and endure ten minutes at a scorching 1700°F, all in accordance with the UL 103 test standard.

  • Flexible Sizing: With various lengths available, including 10", 12", 14", 16", 18", 20", 22", and 24", you can choose the one that perfectly fits your needs. Just remember to subtract 1" from each joint overlap when calculating the installed length of 10"-24" DuraTech Chimney.

  • Worry-Free Warranty: DuraVent stands behind its product with a limited-lifetime warranty, ensuring that you're making an investment that will serve you well for years to come.


  • Designed for appliances that are tested and listed for use with a 1700°F rated chimney system, such as zero-clearance or masonry fireplaces, furnaces, boilers, water heaters, ranges, or other appliances fueled by oil, coal, gas, or wood.
  • Tested to UL 103 and listed under MH 7399.
  • Available in galvalume (GA) and stainless steel (SS) outer wall and stainless steel inner wall.


  • To calculate installed length of 10”, 12”, 14”, 16”, 18”, 20”, 22”, or 24” DuraTech Chimney, subtract 1” from each joint overlap of chimney pipe.
  • 18”-24” diameters are built to order and are not returnable.


Model 12DT-18SS 14DT-18SS
Dimensions 12" (A) x 14" (B) 14" (A) x 16" (B)
Clearances 2" clearance to combustible.
Listings c-UL-us listed to UL 103 and ULC S604 (MH7399)
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.

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.

Order Shipment:

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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