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Sflue Black (2119705B) - Increaser - Ø 100-127mm (42-100-002)

Enhance your chimney system with the Sflue Black Increaser, a premium upgrade designed for solid fuel, gas, and oil appliances. Manufactured by Sflue, a trusted name in flue system technology in the UK, this increaser is an ideal solution for homeowners seeking reliability and efficiency. Read more...
Sflue Black (2119705B) - Increaser - Ø 100-127mm
IN STOCK
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Now only £84.99
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At a Glance

  • Upgrades flue diameter from Ø100mm to Ø127mm
  • Constructed with durable 304 and 316 grade stainless steel (0.4mm thickness)
  • Features compressed rockwool insulation (230kg/m3) for enhanced safety
  • Equipped with an 8-barbed twist lock mechanism and locking band
  • HETAS approved and CE marked for compliant installation
  • Maintains a safe 50mm clearance from combustible materials
  • Ideal for solid fuel, gas, and oil appliance applications

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.

Have Questions?
Phone: 01670 206999
Email: sales@nationalflues.com

The Sflue Black (2119705B) Increaser - Ø 100-127mm is an essential component for anyone looking to increase the diameter of their flue system. Perfect for use with solid fuel and gas/oil appliances such as woodstoves, gas coal effect fires, and boilers, this increaser ensures optimal performance and safety. Constructed with a 0.4mm thick outer skin made from 304 grade stainless steel and an inner skin made from 316 grade stainless steel, this increaser is designed for long-lasting durability.

The insulation is composed of compressed rockwool with a density of 230kg/m3, which is encapsulated within the twist-lock couplers. Featuring an 8-barbed twist lock mechanism, the parts are securely connected using a locking band, and you must maintain a safe distance of 50mm from the outside of the flue to any combustible materials like wood or plasterboard. Approved by HETAS and CE marked, with a designation number of EN1856-1 T450 N1 D V2 L50040 G50, this increaser stands up to rigorous quality standards.

SKU: 42-100-002

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, November 17th. This is based on current lead times. Bear in mind that it is a busy time of year. If you need a product delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. Visit our Shipping Information page for more information.

About National Flues Ltd +

We began over 30 years ago as a fireplace shop in the North East. We now supply hundreds of trade professionals and thousands of retail customers, all across the UK, every month. We are still a family owned business, lead by the MD Neil, and always try our best to deliver the best possible experience. We also price match, so give us a call if you find this cheaper and want to buy from us. Visit our about us page to read a bit more.

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Technical Specifications
SKU42-100-002
Diameter IncreaseØ100mm to Ø127mm
Outer Material304 Stainless Steel - 0.4mm thick
Inner Material316 Stainless Steel - 0.4mm thick
InsulationCompressed Rockwool (230kg/m3)
Lock Mechanism8-barbed twist lock with locking band
ApprovalsHETAS and CE
DesignationEN1856-1 T450 N1 D V2 L50040 G(50)
Clearance Requirement50mm from combustibles
Step-by-step installation: Ensure the flue system is properly measured to maintain a 50mm clearance from any combustible materials. Connect the increaser using the secure 8-barbed twist lock couplers, ensuring that the locking band is fastened tightly to prevent any disengagement. Follow the manufacturer's guidelines closely; if unsure at any stage, consult a qualified professional installer. Warning: Compromising the 50mm clearance can lead to safety hazards and should be avoided at all costs.

The Sflue Black Increaser can be used with woodstoves, gas coal effect fires, oil and gas boilers, and any solid fuel appliances.

The Sflue Black Increaser's outer skin is made from 304 grade stainless steel, and the inner skin is made from 316 grade stainless steel. Both skins are 0.4mm thick.

The insulation in the Sflue Black Increaser is composed of compressed rockwool, which has a density of 230kg/m3.

Yes, the Sflue Black Increaser is HETAS approved and CE marked, with a designation number EN1856-1 T450 N1 D V2 L50040 G50.

You must maintain a distance of 50mm from the outside of the flue to any combustible materials, such as wood or plasterboard.

The Sflue Black Increaser features an 8-barbed twist lock mechanism. The parts are securely connected using a locking band.

The twist-lock couplers ensure a secure and tight fit of the flue components, encapsulating the insulation for added safety and efficiency.

 

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