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5 Inch x 24 Inch Ventis Square Ceiling Support Extension

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VA-CCSEXT2405 - 5" Ventis Class-A All Fuel Chimney Painted Black 24" Tall Extension Long Square Ceiling Support. Used to extend the height of the square ceiling support box.


  • Sleek Mirror Finish Outer Casing made of 430 Stainless Steel
  • Non-carcinogenic 2192-degree insulation for enhanced safety
  • Inner Casing available in your choice of 304L or 316L Stainless Steel
  • Innovative Ventis Thermal Web technology
  • Efficiently reduces heat transfer to the exterior of the pipe
  • Allows for thermal bridging between sections of the pipe
  • Seamlessly joins the inner and outer pipe while accommodating expansion and contraction of the inner pipe
  • Provides 360-degree reinforcement for the fastening system
  • Designed specifically for solid fuel applications
  • Listed to UL103HT and ULCS629
  • Manufactured in the USA
  • Forever Warranty™

Upgrade your chimney system with the VA-CCSEXT2405 for enhanced safety and performance.


  • 5" Inner Diameter
  • 24" Tall  Extension
  • Suitable for Both Flat and Cathedral Ceiling Applications
  • Can also be used in Short Attic Spaces
  • Supports can Carry Up to 60’ 
  • Support is Constructed of 24 Gauge Galvanneal Steel Painted Black
  • Includes Universal Adapter
  • Includes a 2-piece Trim Collar Suitable for Any Ceiling Pitch
  • Reduce 2” Clearance to 1” Clearance Per Side


The Ventis Class-A All-Fuel Chimney Painted Black 24" Tall Extension Long Square Ceiling Support is an essential component for safely and efficiently venting various heating appliances, such as wood stoves, pellet stoves, and fireplaces. It is a vital part of the Ventis Class-A Chimney system, designed to ensure proper exhaust and prevent potential fire hazards.

Here are some key features and information about this product:

  1. Class-A All Fuel Chimney: This chimney extension and ceiling support are constructed using Class-A chimney technology, suitable for use with various fuels, including wood, gas, oil, and coal. It is built to withstand the high temperatures and demands of these heating applications.
  2. 24" Tall Extension: The 24-inch height extension provides additional clearance between the heating appliance and the ceiling or other combustible materials. This added space helps to prevent excessive heat transfer and enhances safety.
  3. Painted Black Finish: The chimney extension and ceiling support are coated in a sleek black finish, adding an attractive aesthetic element to your chimney system and helping it blend seamlessly with your decor.
  4. Long Square Ceiling Support: The square ceiling support is designed to secure and stabilize the chimney as it passes through the ceiling and roof. Its shape ensures that it can effectively bear the weight of the chimney and maintain a secure connection.
  5. Easy Installation: This Ventis extension and ceiling support is engineered for straightforward installation. Detailed instructions and necessary hardware are typically included, making it convenient for both professional installers and knowledgeable homeowners.
  6. Ventis Quality: Ventis is a reputable manufacturer of high-quality chimney components and systems. Their products are constructed to meet industry standards and provide long-lasting performance.

When installing a chimney system, it's crucial to select components like the Ventis Class-A All Fuel Chimney Painted Black 24" Tall Extension Long Square Ceiling Support that meet safety requirements and provide efficient venting. Always follow the manufacturer's guidelines and consult a professional if unsure about the installation process to ensure your heating appliance operates safely and effectively.

VENTIS® CLASS-A All-Fuel Chimney System

The Ventis Class-A All Fuel Chimney with a 304L or 316L inner and 430 outer wall is a high-quality and versatile chimney system designed for venting a wide range of heating appliances, including wood stoves, fireplaces, furnaces, and more. This chimney system is known for its durability, safety, and compatibility with various fuel types, making it a popular choice for both residential and commercial applications.

Here are some key features and benefits of the Ventis Class-A All-Fuel Chimney:

  1. Dual-Wall Construction: The chimney consists of two walls - a 304L or 316L stainless steel inner liner and a 430 stainless steel outer wall. The 304L or 316L stainless steel is highly corrosion-resistant and is designed to withstand high temperatures and corrosive byproducts produced during the combustion process.
  2. All Fuel Compatibility: This chimney system is suitable for use with a variety of fuel types, including wood, oil, gas, and coal. It can handle the demands of different heating appliances, ensuring safe and efficient venting.
  3. Easy Installation: The Ventis Class-A All Fuel Chimney is designed for straightforward installation. It typically includes features such as twist-lock connections and secure locking bands, making it easier for installers to put the system in place.
  4. High-Temperature Insulation: Some models come with high-temperature insulation between the inner and outer walls. This insulation enhances the safety of the chimney by reducing the clearance requirements for combustibles, and it helps maintain higher flue gas temperatures for improved draft.
  5. Durable and Long-Lasting: The 304L or 316L stainless steel inner liner provides excellent resistance to corrosion and rust, ensuring that the chimney system remains durable and long-lasting even in harsh conditions.
  6. UL Listed and Tested: Ventis Class-A All Fuel Chimney systems are typically tested and listed to UL 103 and UL 103HT standards, ensuring that they meet rigorous safety and performance criteria.
  7. Versatile Design: The chimney system is available in various sizes and configurations to accommodate different installation requirements, including through-the-roof, through-the-wall, and freestanding installations.
  8. Sleek Aesthetics: The stainless steel finish of the outer wall adds a clean and polished look to your home or commercial space.

When choosing a Ventis Class-A All Fuel Chimney system, it's essential to consult with a professional installer to ensure that the system is appropriately sized and installed according to local building codes and regulations. Proper installation and maintenance are crucial to the safe and efficient operation of your heating appliance.

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Last updated on March 7th 2024.



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