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Horizontal end - Ø 125 (3-125-113)

National Flues offers the exceptional Horizontal End Ø 125, a robust terminal for modular flue systems. This essential component, crafted from high-grade 316L stainless steel, is ideal for chimney liners, boilers, ovens, and ventilation applications. With its CE certification and adherence to EN 1856-1 standards, the product ensures reliability and performance in both high and low temperature environments. It is a preferred choice for professionals seeking quality and safety in their flue instal Read more...
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At a Glance

    Crafted from premium 316L stainless steel
    CE marked and compliant with EN 1856-1 standards
    Suitable for high and low temperature applications
    Easy push-fit jointing design with locking bands
    Maintains a safe 50mm clearance from combustibles
    Versatile for boilers, ovens, ventilation, and chimney liners
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, June 20th. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

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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.

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.

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Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.

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Have Questions?
Phone: 01670 206999
Email: [email protected]

The Horizontal End Ø 125 is a premium component of the SWPro modular single wall flue system, crafted from high-grade 316L stainless steel. It's engineered for both high and low-temperature applications, accommodating non-condensing and condensing systems with flue gases in both positive and negative pressures. With a CE mark and compliance with EN 1856-1 standards, this flue terminal demonstrates robust performance and safety.

The push-fit jointing system with locking bands ensures a seamless installation. Suitable for various uses, from boilers and ovens to ventilation systems and chimney liners, while maintaining a safe distance of 50mm from combustibles. Ideal for professionals seeking durability and adaptability.

SKU: 3-125-113

Technical Specifications
Material316L Stainless Steel
SystemSWPro Modular Single Wall
StandardEN 1856-1, CE Marked
Temperature RangeHigh & Low Temperature Applications
Installation MethodPush-Fit Jointing with Locking Bands
Clearance50mm from combustibles
Warranty10 Years
Dimensionsu00d8 125
For a secure installation, use the push-fit jointing system with locking bands as directed in the manufacturer guidelines. Ensure that jointing gaskets are used for P1 and H1 installations. It is critical to maintain the minimum 50mm clearance from any combustible materials, such as wood or plasterboard, to comply with safety standards. Verify all connections are firmly in place and check for any misalignments. Always refer to the detailed installation manual provided with your product before beginning the installation process, and consult a professional if uncertain about any steps.

It is made from high-grade 316L stainless steel, offering outstanding durability and resistance to corrosion.

Yes, it is CE marked, ensuring compliance with rigorous European safety and performance standards.

It is ideal for boilers, ovens, ventilation systems, and as a chimney shaft liner.

The Horizontal End Ø 125 uses a push-fit jointing system secured with locking bands. It also requires jointing gaskets for P1 and H1 installations.

Yes, it is designed for both high and low-temperature applications, suitable for both non-condensing and condensing systems.

You need to maintain a distance of 50mm from any combustible material such as wood or plasterboard.

316L stainless steel is highly regarded for its excellent corrosion resistance and strength, making it ideal for demanding environments.

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