Welcome to National Flues and Fireplaces Ltd. We use cookies to enable functionality on this website, to collect data to improve the website, and to enhance your experience on here. By continuing, you agree to our use of cookies as detailed in our Cookie Policy. Enjoy your visit & call our experts on 01670 206 999 if you need any help with products!
Cookie Preferences
We use different types of cookies for various purposes. Please select which you allow:
Twin Wall to Flex Adaptor Ø 100 (2-100-099)
National Flues' Twin Wall to Flex Adaptor Ø 100mm offers an exceptional solution for transitioning between Twin Wall flue systems and MI-Flues multi-fuel liners. Expertly designed for woodstoves, gas, and oil appliances, this adaptor combines robust stainless steel construction with superior insulated performance to ensure safety and efficiency. Trust National Flues for quality, durability, and seamless performance.
Low Stock! – Order Now
£63.99
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Robust construction with dual stainless steel layers (304 outer and 316 inner, each 0.40mm thick) Superior thermal efficiency with 200kg/m³ compressed rockwool insulation Fully welded design ensuring a secure, leak-free transition between Twin Wall and flex liners Certified to HETAS and CE standards, meeting EN1856-1 requirements Maintains a safe 50mm clearance from combustible materials
×
Email Product
Enter your email address to send the product details:
Please Note: All dimensions refer to the internal diameter of flues.
If unsure, please call 01670 206999 to ensure you choose the correct products.
We Won't Be Beaten On Price
At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:
Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
Operational Efficiency: We have streamlined processes to reduce overhead.
Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.
Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).
“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
The Twin Wall to Flex Adaptor Ø100mm is engineered for efficient and secure transitions between your Twin Wall flue system and MI-Flues multi-fuel liner. Designed for use with solid fuel and gas/oil appliances such as woodstoves, gas coal effect fires, and oil or gas boilers, this adaptor boasts superior construction from high-grade stainless steel. The outer skin is made from 304 grade stainless steel, while the inner skin features 316 grade stainless steel, both with a thickness of 0.4mm.
Insulating the unit is compressed rockwool, providing a density of 200kg/m3, ensuring maximum thermal efficiency. Fully welded for enhanced durability, this adaptor maintains a safe distance of 50mm from combustible materials, adhering to the highest safety standards. TWPro is HETAS approved and CE marked, ensuring compliance with industry regulations.
The installation is straightforward, relying on a secure Locking Band, making it a reliable choice for any installation project.
SKU: 2-100-099
Technical Specifications
Adaptor Size
u00d8 100mm
Inner Material
316L Stainless Steel (0.40mm thick)
Outer Material
304 Stainless Steel (0.40mm thick)
Insulation
Compressed Rockwool, 200kg/mu00b3
Clearance
50mm from combustibles
Approvals
HETAS, CE
Standards
EN1856-1 T600 N1 W V2 L50040 G50 / EN1856-1 T200 W V2 L50040 O20
Applications
Solid fuel, gas, and oil appliances
Installation Method
Secure Locking Band
• Ensure the adaptor is installed only on a class 1 chimney with no visible flexible liner.
• Secure the adaptor in position using the provided Locking Band for a reliable connection.
• Always maintain a minimum clearance of 50mm between the adaptor and any combustible materials to meet safety regulations.
• Read and follow all manufacturer guidelines and local building regulations prior to installation.
• For additional security and compliance, consider professional installation if you are unsure.
Yes, the Twin Wall to Flex Adaptor Ø100mm is suitable for use with solid fuel, gas, and oil appliances including woodstoves, gas coal effect fires, and boilers.
The adaptor is constructed with 304 grade stainless steel for the outer skin and 316 grade stainless steel for the inner skin, both having a thickness of 0.4mm.
Yes, the Twin Wall to Flex Adaptor Ø100mm is HETAS approved and CE marked for assurance of quality and compliance with industry standards.
A distance of 50mm from the outside of the flue to any combustible materials such as wood or plasterboard is required.
The adaptor is secured using a Locking Band to ensure a firm connection. The installation must be conducted in a class 1 chimney with no flexible flue liner visible from the outside.
The Twin Wall to Flex Adaptor Ø100mm is insulated with compressed rockwool at a density of 200kg/m3, ensuring excellent thermal insulation.
The adaptor complies with EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20 standards.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Tuesday, May 20th. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call.
If you need faster stove or fireplace delivery please also give us a call.
We can sometimes reduce longer lead times if we pay the carrier £25 for express delivery.
Visit our Shipping Information page for more information.
Warranty & Returns +
All our products come with warranties. Mi-Flex offers a lifetime guarantee.
Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.
Price Match Guarantee +
We will match any price like for like on a retail basis. Give us a call if you find it cheaper and want to buy from us.
Read our review in our Twin Wall to Flex Adaptor Ø 100 buyers guide
Twin Wall to Flex Adaptor Ø 100mm Buyer’s Guide
When it comes to securing the integrity of your chimney system, selecting the right components is essential. The Twin Wall to Flex Adaptor Ø 100mm by National Flues is engineered to provide a flawless transition between your Twin Wall flue system and a flexible flue liner. Whether you are upgrading your system for a new gas, oil, or solid fuel appliance, the confidence provided by a product that is both durable and compliant with stringent safety standards cannot be understated.
Why Choose the Twin Wall to Flex Adaptor?
Premium Materials & Construction:
- Constructed with an outer layer of 304 stainless steel and an inner layer of 316L stainless steel, both with a thickness of 0.40mm, this adaptor is built to withstand high temperatures and extreme conditions. It ensures longevity and performance even under continuous use.
Superior Insulation:
- Incorporating compressed rockwool with a density of 200kg/m³, the adaptor maximises thermal efficiency. This insulation design helps maintain optimal operating temperatures and enhances the overall safety of your installation by reducing heat loss.
Comprehensive Certification:
- Fully HETAS approved and CE marked, the adaptor meets the highest industry safety standards, giving you reassurance that you are using a product that complies with EN1856-1 regulations.
Streamlined Aesthetics:
- One of the key advantages of this adaptor is its ability to hide the flexible liner from view. This means your installation remains neat and professional, enhancing the overall appearance of your chimney system.
Key Considerations for Your Installation
Before installation, it is important to consider a few key points to guarantee that your system performs optimally:
- Clearance Requirements:
Always ensure a distance of no less than 50mm between the adaptor and any combustible materials such as wood or plasterboard. This is crucial not only for safety but also to comply with local building regulations.
- Secure Fixing:
The adaptor is designed to be installed using a secure Locking Band. Make sure that the band is correctly fitted for a reliable and leak-proof connection.
- Compliance with Standards:
The product adheres to EN1856-1 standards, which means it is specifically designed to perform in environments that demand strict safety protocols. If you are upgrading or retrofitting your existing setup, verifying that all components meet these standards is essential for a safe installation.
Addressing Common Objections
Objection: Installation Complications
- Many customers worry about the complexity of installing a new adaptor. However, this product features an intuitive design that simplifies the attachment process. For those who are experienced in DIY projects, installation is straightforward. For others, hiring a professional installer can ensure the job is done safely and correctly.
Objection: Durability Concerns
- Some may question the longevity of a product made from stainless steel with only a 0.40mm thickness. The dual layer design using both 304 and 316 grade materials is specifically chosen for its balance of strength and heat conduction properties, ensuring durability even in the most demanding conditions.
Objection: Compatibility with Appliances
- It is natural to be concerned about whether the adaptor will suit various types of appliances. Rest assured, this product is engineered for use with solid fuel, gas, and oil appliances including woodstoves, gas coal effect fires, and boilers, making it a versatile choice for a range of installations.
Enhancing Your Overall System
Beyond its immediate function, the Twin Wall to Flex Adaptor Ø 100mm can be a key component in an optimised chimney installation system. Customers often explore accessory options to complement and extend the performance of their flue systems. Accessories such as additional insulating flue liners or smart control panels may further enhance efficiency and ease of use. Explore our range to tailor your setup to perfection.
This adaptor is more than just a connection piece; it is a vital part of a larger, well-integrated system that ensures your home remains warm, safe, and energy-efficient. Leveraging National Flues’ reputation for reliability and excellence, this product is designed to meet both the technical and aesthetic demands of modern installations.
Final Thoughts
In summary, the Twin Wall to Flex Adaptor Ø 100mm is a robust, safety-compliant solution ideal for various heating applications. With its premium engineering, superior insulation, and clear certification, it represents a smart investment for anyone looking to enhance the performance and safety of their chimney system. By addressing common concerns and offering a clear installation process, National Flues empowers you to make an informed decision. The combination of quality construction, ease of installation, and seamless integration with existing systems makes this adaptor an excellent choice for both new installations and system upgrades.
Take the next step in securing your home's heating efficiency and safety by choosing a component that stands the test of time.
Add to your cart now or call 01670 206 999.
Purchase the Twin Wall to Flex Adaptor today for a secure and efficient chimney system.
×
Select Product Options
×
Product added
Would you like to keep shopping or head to checkout?
Click To Call Our Experts