DuraVent | DuraFlex 316 Stainless Steel 35' Flex Pipe Length Top Plate/Cap Kit

Save $94.47
DuraVentSKU: 4DF316-35VCK

Regular price$850.19 Sale price$944.66

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Size: 4"
⛟ Estimated Delivery Date: Between and to all states excl. Alaska & Hawaii.

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Unveil the pinnacle of venting excellence with the DuraVent 35' Flex Pipe Length DuraFlex 316 Stainless Steel Top Plate/Cap Kit. DuraVent, synonymous with innovation, safety, and professionalism, offers you a solution that redefines chimney maintenance. Crafted from premium 316 stainless steel, this kit is designed to elevate your HVAC and Hearth experience.

With DuraFlex 304 and 316, you gain access to lighter, more cost-effective liners that shine when minimal offsets challenge your chimney. These liners are perfect for wood burning, non-condensing gas, and oil-fired appliances, holding the prestigious UL 1777 and ULC S635 certifications. But when the battle against corrosion intensifies, DuraFlex 316 stands as your shield of choice, recommended especially for coal-fired appliances.


  1. Unparalleled Durability: Crafted from 316 stainless steel, this kit promises longevity that stands the test of time.

  2. Effortless Maintenance: Flex remains securely fastened to the Storm Collar/Top Plate, simplifying inspections and cleaning.

  3. Comprehensive Kit: The package includes a DuraFlex SS Top Plate with a welded Storm Collar, a DuraFlex SS Removable Vertical Cap, a DuraFlex SS Connector, and a DuraFlex 316 length, ensuring you have all you need.

  4. Customization: Need a specific length? DuraFlex offers customization, with orders starting at just 10 feet.

  5. Versatile Applications: From fireplace inserts and furnaces to boilers and water heaters, this kit suits a range of applications, including wood pellet, non-condensing gas, wood-burning, and oil appliances.

Key Features

  1. Secure Fastening: Flex stays put with the Storm Collar/Top Plate, simplifying cap section removal for inspections and cleaning.

  2. Comprehensive Kit: Includes the DuraFlex SS Top Plate with Welded Storm Collar, DuraFlex SS Removable Vertical Cap, DuraFlex SS Connector, and DuraFlex SS 316 Length.

  3. Premium Material: Crafted from high-grade 316 stainless steel for ultimate durability.

  4. Customizable Lengths: Order custom lengths, starting from 10 feet, to suit your specific chimney needs.

  5. Versatile Applications: Suitable for wood-pellet, non-condensing gas, wood-burning, and oil appliances, providing flexibility in usage.


The DuraVent 35' Flex Pipe Length DuraFlex 316 Stainless Steel Top Plate/Cap Kit is your go-to solution for flexible relining in masonry chimneys. It effortlessly adapts to gas, wood pellet, oil, or wood appliances, making it ideal for a variety of settings, including:

  • Fireplace Inserts: Enhance your fireplace's performance and safety.
  • Furnaces: Ensure efficient and reliable heating for your home.
  • Boilers: Keep your boiler system running smoothly and safely.
  • Water Heaters: Enjoy hot water without worry.


Model Size Flex Length
4DF316-35VCK 4" I.D 35 ft.
55DF316-35VCK 5.5" I.D 35 ft.
6DF316-35VCK 6" I.D 35 ft.
Materials 316 Stainless Steel
Construction Single-Wall
Clearance 0” clearance for gas, oil, and pellet applications.
Clearance 1” clearance to masonry for wood-burning
Listings Listed to UL 1777 and ULC S635 (MH45609).
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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