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Wall Sleeve 45° Adjustable - Ø 125 (15-125-100)
National Flues presents the Wall Sleeve 45° Adjustable - Ø 125, a premium solution for chimney protection and flue system compliance. Designed for both solid fuel and gas/oil appliances, this adjustable wall sleeve is perfect for wood stoves, gas fireplaces, and oil boilers. With robust dual stainless steel construction and top-grade rockwool insulation, our product ensures efficient heat retention and enhanced safety. Trust National Flues for reliable chimney accessories, superior installation performance, and nationwide delivery.
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In Stock
£28.49
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
45° adjustable design for flexible installation
Dual stainless steel layers (304 outer, 316 inner; both 0.4mm thick) for enhanced durability
Compressed rockwool insulation (200kg/m³ TWPro / 128kg/m³) for superior thermal protection
HETAS approved and CE marked to meet safety standards
Versatile: suitable for wood stoves, gas, oil, and low sulphur coal appliances
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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 Wall Sleeve 45° Adjustable - Ø 125 is designed for chimney systems used with solid fuel and gas/oil appliances, such as wood stoves, gas coal effect fires, and oil and gas boilers. Constructed with a 304 grade stainless steel outer skin and a 316 grade stainless steel inner skin, both 0.4mm thick, this wall sleeve is built for durability and efficiency. The insulation consists of compressed rockwool with a density of 200kg/m³ TWPro / 128kg/m³, ensuring excellent thermal protection.
Fully welded parts guarantee a robust build, and the product is HETAS approved and CE marked. When installing, secure the parts using a Locking Band and maintain the recommended distance from any combustible materials. This adjustable wall sleeve, pre-cut at 45°, allows easy manual extension within the wall, making installation more flexible and straightforward.
• Before installation, verify all components against the supplied instructions.
• Secure the wall sleeve using the recommended Locking Band to ensure a stable and robust assembly.
• Maintain a minimum clearance from combustible materials: 50mm for TWPro systems and 60mm for KC systems.
• Carefully position the insulation (compressed rockwool) to guarantee optimal thermal protection.
• For best results, consider professional consultation, particularly if working with multiple flue components or retrofitting older installations.
This wall sleeve is suitable for use with solid fuel and gas/oil appliances, including wood stoves, gas coal effect fires, and oil and gas boilers.
The outer skin is made from 304 grade stainless steel, while the inner skin is constructed from 316 grade stainless steel. Both skins are 0.4mm thick.
The insulation consists of compressed rockwool with a density of 200kg/m³ TWPro / 128kg/m³, providing excellent thermal protection.
Yes, the wall sleeve is HETAS approved and CE marked, ensuring it meets industry standards for safety and performance.
The recommended distance to combustible materials is 50mm for TWPro and 60mm for KC systems.
The wall sleeve parts are secured together using a Locking Band. Ensure you maintain the required distance from combustible materials.
Yes, the wall sleeve is adjustable and can be manually extended within the wall, making it flexible and easy to install.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Wednesday, April 30th.
If you need faster stove or fireplace delivery please give us a call.
We can often 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.
When it comes to ensuring the safe and efficient operation of your chimney system, every component plays a pivotal role. The Wall Sleeve 45° Adjustable - Ø 125 by National Flues is a critical element designed to protect your chimney in wall passages, providing both structural integrity and thermal efficiency. This comprehensive guide will help you understand why this product is essential, how it works, and what additional accessories might be required to complete your installation.
Understanding the Product
The Wall Sleeve 45° Adjustable is crafted specifically for chimney systems associated with solid fuel as well as gas and oil appliances. It features a unique pre-cut 45° adjustable design which makes it exceptionally flexible during installation. The dual-layer construction using 304 grade stainless steel externally and 316 grade internally ensures that your investment is well-protected against corrosion and mechanical wear.
Key Benefits:
- Safety Compliance: With HETAS approval and CE marking, this wall sleeve meets rigorous safety standards.
- Enhanced Durability: Stainless steel materials guarantee longevity under varying environmental conditions.
- Efficient Insulation: The rockwool insulation balances the need for thermal protection while allowing the unit to perform under high temperature conditions.
Why Choose a 45° Adjustable Wall Sleeve?
One of the standout features of this product is its 45° pre-cut adjustable design. This design allows installers to easily extend the sleeve manually within the wall, ensuring a secure and customised fit. Whether you are retrofitting an existing chimney or installing a new one, the adjustability of this product means that your installation can be tailored to meet specific safety requirements and spatial constraints without compromising performance.
Installation and Safety Considerations
A well-installed chimney system is not only about performance but also safety. Installation details such as using the appropriate Locking Band to secure the wall sleeve and maintaining the recommended distances of 50mm (TWPro) or 60mm (KC) from combustible materials are vital. These measures help mitigate fire risks and ensure that your chimney system operates efficiently.
Installation Tips:
- Always verify that all components are intact and free from damage before beginning installation.
- Follow the manufacturer’s guidelines meticulously to avoid any installation errors that could compromise safety.
- If uncertain, engage a professional installer to ensure that every safety standard is met.
Additional Accessories and Components
While the Wall Sleeve 45° Adjustable is a robust product on its own, several optional accessories can further enhance your chimney system's performance. Consider searching for adaptable Locking Bands, additional insulation materials, or chimney liners that are specifically designed to complement your wall sleeve. These accessories provide additional layers of safety and ensure that the overall installation is as efficient as possible.
Addressing Common Concerns
Q: Is this wall sleeve suitable for all types of fuel appliances?
A: Yes, the product is engineered to be compatible with wood stoves, gas, oil, and low sulphur coal appliances, offering a versatile solution for diverse heating systems.
Q: How do I ensure that my installation meets all safety standards?
A: By strictly adhering to the installation guidelines provided, particularly regarding the use of a Locking Band and maintaining specified clearances from combustible materials, your installation will comply with all recommended safety requirements.
Q: What if my chimney dimensions slightly vary?
A: The adjustable nature of the product allows for minor modifications during installation, ensuring that it can accommodate various wall configurations with ease.
Concluding Thoughts
Investing in a high-quality wall sleeve is fundamental to the integrity and performance of your entire chimney system. The Wall Sleeve 45° Adjustable - Ø 125 is not only a solution for protecting your chimney from heat loss and structural damage but also a critical component in ensuring overall system safety. With its advanced design and robust materials, this product stands out in the market, especially for those who demand quality, performance, and safety.
National Flues is committed to providing not only superior products but also the guidance needed to help you make an informed decision. The detailed specifications and installation guidelines ensure that you receive a product that is both reliable and easy to incorporate into your existing system. If you are looking for accessories to complement this wall sleeve, do not hesitate to explore additional flue system components available through our comprehensive catalog.
By choosing the Wall Sleeve 45° Adjustable, you are investing in peace of mind, optimal performance, and longevity for your chimney system. Every installation should be approached with the utmost care and attention to detail, and our product is designed with these principles in mind. For further clarity or to address any installation concerns, additional resources and expert advice are readily available through our support channels.
Your safety and satisfaction are our top priorities. Ensure that your chimney system is installed correctly, using quality components that meet the highest standards of performance and durability. With National Flues, you are not just purchasing a product, but a complete solution to all your chimney-related needs.
buy now or call 01670 206 999.
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