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:
Enhance your chimney's performance with the TWPro MB Twin Wall to Twin Wall Increaser Ø 100-125mm. This TWPro product, ideal for solid fuel and gas appliances, is a top choice for those seeking durability, efficiency, and safety. Its high-grade stainless steel construction and compliant design make it a preferred solution for upgrading, modernising, or optimising your flue system.
Low Stock! – Order Now
£83.99
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Robust design engineered for seamless transition from 100mm to 125mm flue diameters Constructed with 316L stainless steel inner skin and 304 stainless steel high temperature black coated outer skin Compressed rockwool insulation (200kg/m³) ensures optimal thermal performance HETAS approved and CE marked for safety and regulatory compliance Simplified installation with an included Locking Band Versatile compatibility with wood, gas, and oil appliances Maintains safe 50mm clearance to combustible materials for reliable, secure operation
×
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 TWPro MB - Twin Wall to Twin Wall Increaser Ø 100-125mm is specifically designed for solid fuel and gas/oil appliances, such as wood stoves, gas coal effect fires, oil boilers, and gas boilers. This increaser allows you to smoothly transition between different flue sizes, enhancing the efficiency and performance of your chimney system.Constructed with an outer skin of 304 stainless steel, coated with a high-temperature black finish, and a 316-grade stainless steel inner skin, the increaser promises durability and resistance to high temperatures. The compressed rockwool insulation (density of 200kg/m³) ensures optimal thermal performance while maintaining safety standards.TWPro products are HETAS approved and CE marked, meeting the stringent quality and safety norms.
The product designation numbers are EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20.Installation is hassle-free with the provided Locking Band, ensuring secure assembly. It's critical to maintain a 50mm distance from combustible materials such as wood and plasterboard to the exterior of the flue for safety.
SKU: 37-100-004
Technical Specifications
SKU
37-100-004
Increaser Size
u00d8 100-125mm
Inner Material
316L Stainless Steel (0.40mm thick)
Outer Material
304 Stainless Steel - High Temperature Black Coated (0.40mm thick)
Insulation
Compressed Rockwool (200kg/mu00b3)
Certifications
HETAS / CE
Minimum Clearance
50mm from combustible materials
Compatible Fuels
Wood, Oil, Gas, Low Sulphur Coal
Included Accessory
Locking Band for secure installation
Installation is designed to be straightforward. First, verify that all included components are available before beginning. The TWPro MB Increaser comes with a Locking Band that simplifies securing the increaser into place. Carefully align the increaser with your existing twin wall flue system, ensuring that the inner and outer skins are properly oriented. Always maintain a minimum 50mm clearance from any combustible materials such as wood or plasterboard. Although the product is crafted for ease of installation, always consult with a professional chimney technician if you are unsure. Additionally, consider exploring optional accessories such as adjustable sealing kits or extra insulation packs to further tailor the installation to your home's specific needs.
The increaser is suitable for solid fuel and gas/oil appliances like wood stoves, gas coal effect fires, oil boilers, and gas boilers.
The outer skin is made from 304-grade stainless steel with a high-temperature black finish. The inner skin is made from 316-grade stainless steel.
Yes, the TWPro MB increaser is HETAS approved, ensuring it meets high safety and performance standards.
The increaser comes with a Locking Band, which makes the installation process simple and secure.
You should maintain a minimum distance of 50mm from any combustible materials such as wood or plasterboard.
The increaser is insulated with compressed rockwool, offering a density of 200kg/m³ for optimal thermal performance.
Yes, this increaser is versatile and suitable for both gas and solid fuel appliances.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Monday, May 19th. 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 TWPro MB - Twin Wall to Twin Wall Increaser - Ø 100-125mm buyers guide
TWPro MB Twin Wall to Twin Wall Increaser – A Comprehensive Buyers Guide
Whether you are upgrading an existing flue system or installing a new one, the TWPro MB Twin Wall to Twin Wall Increaser Ø 100-125mm is a premium choice built with performance and safety in mind. This guide is designed to answer all your queries about the product while explaining its benefits, installation processes, and availability of optional accessories.
Product Overview
The TWPro MB Increaser is engineered to provide an effective transition for twin wall flues. Transitioning from a 100mm to a 125mm flue diameter, its construction includes an inner skin made from top-grade 316L stainless steel and an outer skin comprised of 304 stainless steel finished with a high temperature black coating. These materials ensure longevity and reliable performance even under high temperature conditions. The product is also insulated with compressed rockwool (200kg/m³) which greatly enhances its thermal efficiency.
Why Choose the TWPro MB Increaser?
Unmatched Durability: The use of premium stainless steel ensures that the increaser withstands the rigours of high-temperature operation and daily wear. This durability translates into long-term reliability, reducing the frequency of maintenance and replacement.
Enhanced Safety: With its HETAS approval and CE marking, the product conforms to strict regulatory standards. This approval guarantees that every component of the increaser has been tested and meets high safety thresholds.
Ease of Installation: The inclusion of a Locking Band simplifies the installation process, making it accessible even for those with limited technical knowledge. Users are advised to follow the instructions carefully and maintain the minimum 50mm clearance from combustible materials, ensuring regulated safety practices.
Detailed Features and Benefits
1. High-Grade Materials:
- *Benefit:* Ensures robust performance during prolonged use, secure operation, and resistance to corrosion in a variety of weather conditions.
2. Optimised Flue Transition:
- *Benefit:* Improves combustion efficiency and better distributes heat in heating appliances, resulting in more economical operation.
3. Superior Insulation:
- *Benefit:* Minimises heat loss, ensuring that your appliance’s energy is effectively utilised while also promoting safety through thermal regulation.
4. Regulatory Compliance:
- *Benefit:* Provides peace of mind knowing your system complies with UK and EU safety standards, an essential factor for any homeowner or installer.
5. Simple Installation Process:
- *Benefit:* The built-in Locking Band secures the increaser without the need for additional tools, with optional additional accessories available for those who wish to extend functionality further.
Installation Guidelines
Installation of the TWPro MB Increaser is designed to be intuitive. Begin by removing any obstructions and ensuring that the area around your flue is clear. Confirm that all included components are in good condition. The step-by-step process includes aligning the increaser with the existing flue system, securing it using the Locking Band, and verifying that the product maintains a safe 50mm distance from combustible materials. These steps not only ensure that the installation is secure, but they also help in optimising the performance of your flue system.
Addressing Common Objections
Concern about Compatibility:
The TWPro MB Increaser is designed to work with a range of heating appliances including wood stoves, oil boilers, and gas boilers. Its versatility makes it a dependable solution irrespective of your heating system.
Worry Over Installation Difficulties:
While installation is straightforward, first-time users might feel uncertain. That is why we include a comprehensive installation guide with clear instructions. Additionally, there is an option to search for compatible installation accessories such as adjustable seals or extra insulation kits for a more customized setup.
Safety and Compliance Questions:
The product carries both HETAS approval and CE marking which underscores its commitment to safety. The prescribed clearance of 50mm from any combustible material further enhances safety during operation.
Optional Accessories and Enhancements
For those looking to tailor their flue system further, TWPro offers a range of optional accessories. These can include adjustable sealing kits, additional insulation packs, and extended locking mechanisms to provide extra security and efficiency. While the standard product comes complete with all essential parts, exploring these accessories can help further improve the aesthetic and performance of your chimney system.
Final Thoughts
The TWPro MB Twin Wall to Twin Wall Increaser Ø 100-125mm is a cutting-edge solution that provides both efficiency and safety to your heating system. Its design, which utilises robust materials and includes thoughtful features such as the Locking Band, ensures that it stands out in the market. Designed by TWPro, a trusted name in the industry, this product combines modern engineering with strict safety standards to deliver a reliable and long-lasting solution.
Whether you are a homeowner upgrading your chimney system or a professional installer seeking a dependable component, the TWPro MB Increaser is an excellent choice. With its compatibility with various fuel types and ease of installation, it addresses many common challenges faced during flue system upgrades.
The investment in quality and safety is reflected in every feature of the TWPro MB Increaser. From its initial installation to years of efficient operation, this product is designed with your needs in mind. Considering the range of optional accessories available, you can further customise your system to ensure maximum efficiency and safety.
For anyone serious about optimizing their chimney performance, the TWPro MB Increaser offers the reliability and advanced features needed to enhance your home’s heating system. A high-performance product from a reputable brand, it promises to deliver superior results over time.
Buy now or call 01670 206 999.
Order your TWPro MB today for a smoother, safer, and more efficient chimney solution.
×
Select Product Options
×
Product added
Would you like to keep shopping or head to checkout?
Click To Call Our Experts