DuraVent | DirectVent Pro 14" Cathedral Ceiling Support Box

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DuraVentSKU: 46DVA-CS

Sale price$158.35 Regular price$175.95
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Size: 4"x6"

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Introducing the DuraVent 14" DirectVent Pro Cathedral Ceiling Support Box—a pinnacle of venting excellence. DuraVent stands as the unrivaled authority in the venting industry, renowned for engineering solutions that redefine safety, innovation, and professionalism within the HVAC and Hearth markets.

Our DirectVent Pro series stands proudly as the go-to choice, championed by almost every major stove and fireplace manufacturer across the U.S. and Canada. What sets this cathedral ceiling support box apart is its unrivaled versatility, offering the most extensive selection of termination caps for direct vent systems in the market.

DirectVent Pro redefines performance with its tight inner connections, eliminating the need for cumbersome gaskets or sealants, unless explicitly specified by the appliance manufacturer. Every inch of our black pipe lengths, pipe extensions, and elbows features meticulously laser-welded outer wall seams, presenting a seamless, polished finish that adds elegance to any interior. With low-profile locks and an absence of unsightly hems or beads, your venting system becomes a beautiful, unobtrusive addition to your living space.

When paired with your gas appliance, DirectVent Pro takes on a new level of reliability, earning recognition as a decorative gas appliance system or direct vent heater system from major testing agencies like UL, CSA, or Warnock Hersey. As you embark on your journey to enhance your home, always check with your appliance manufacturer for approval.


  1. Unmatched Versatility: The DuraVent Cathedral Ceiling Support Box offers the most extensive choice of termination caps for direct vent systems, ensuring a tailored solution for your needs.
  2. Seamless Performance: Tight inner connections eliminate the need for gaskets or sealants, while laser-welded outer wall seams deliver a sleek, polished appearance.
  3. Aesthetically Pleasing: Low-profile locks and the absence of unsightly hems or beads make this support box an elegant addition to any interior.
  4. Reliable Certification: Tested and listed by leading agencies such as UL, CSA, or Warnock Hersey, it meets the highest standards for safety and performance.
  5. Versatile Installation: Suitable for vaulted or flat ceilings, offering flexibility in placement.


The DuraVent 14" DirectVent Pro Cathedral Ceiling Support Box is your versatile solution for various venting needs, making it ideal for:

  • Stove Venting: Ensure efficient stove venting in both residential and commercial settings.
  • Fireplace Venting: Elevate your fireplace experience with a venting solution that combines safety and aesthetics.
  • Heating Systems: Optimize your heating systems for consistent warmth and reliability.

Ideal Applications

  • Homeowners: Enhance the safety and appeal of your home with a reliable cathedral ceiling support box.
  • Contractors: Simplify installation while ensuring top-tier performance for your clients' projects.
  • Business Owners: Maintain efficient venting for commercial stoves and fireplaces.


Model Size Dimension
46DVA-CS 4"x6.625" 6.875" (A) x 10.625" (B) x 14" Height
58DVA-CS 5"x8" 8.25" (A) x 10.625" (B) x 14" Height
Applications Direct vent gas, propane stoves, heaters, and fireplaces
Clearances Specified by the appliance manufacturer
Listings UL, CSA, or Warnock Hersey
Warranty Limited-lifetime warranty

Typical Installation Guidelines

Selecting the Right Components:

When planning your venting installation, refer to our Typical Venting Installation drawings to help you choose the appropriate component parts. For additional installation examples, please check our download links below.

Planning Your Installation:

For vertical gas stove installations, measure the distance from the stove outlet to the ceiling. This measurement will determine the length of black pipe needed. You can then select either a ceiling support/wall thimble cover or a cathedral ceiling support box accordingly.

To calculate the length of galvanized pipe required, measure the ceiling's thickness and the vertical rise within an attic or on a second story. Remember to include firestops at each floor level beyond the first-floor ceiling support/wall thimble cover or cathedral ceiling support box. If you need to navigate obstacles, utilize a pair of 45° elbows. Ensure proper support by using elbow straps with offsets and wall straps for extended vertical runs. Don't forget the attic Insulation Shield, which is essential in the attic.

Measure the roof pitch and select the appropriate flashing and storm collar. Determine the minimum height required above the roof.

For horizontal installations, consult the appliance manufacturer's instructions to find out the minimum rise and maximum horizontal run requirements. If height restrictions prevent adequate rise above the appliance, consider using a snorkel termination. Additionally, select the suitable Horizontal Termination Cap (as per appliance manufacturer installation instructions) and, to protect vinyl siding, opt for a vinyl siding standoff. Always check the appliance manufacturer’s instructions for wall thimble and firestop requirements.

Design Recommendations:

The following design recommendations serve as general guidelines to aid in the design and selection of venting components for your installation. Prior to installing your chimney system, always adhere to DuraVent Installation instructions included with the cap or support box. You can access installation instructions online at www.duravent.com under Catalogs and Instructions. It's crucial to check the manufacturer’s rating plate and instruction manual to verify that the DuraVent direct vent system is approved for use with the specific brand-name appliance you have selected.

  • Ensure that the inner and outer pipe diameters match the outlet size of the appliance.
  • Refer to the appliance manufacturer’s installation instructions to confirm which vent configurations are permissible (e.g., horizontal, vertical, chimney reline, etc.). Additionally, check for any venting restrictions such as maximum horizontal run, minimum and maximum vertical rise, maximum offset, etc.
  • Prioritize fire safety by maintaining the minimum clearances (air-space) specified in the appliance manufacturer’s installation instructions between the vent pipe and nearby combustible materials. Use proper support and bracing as necessary. Always follow local building codes and have your venting system inspected regularly to ensure safety and compliance


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.

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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