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DM44 - 180mm ID x 300mm high flue block (59-127068)

Elevate your chimney system with the Isokern DM44 - a high-performance 180mm ID x 300mm high flue block crafted from premium natural pumice. Ideal for a range of heating appliances including wood stoves, solid fuel systems, and oil or gas heaters, this reliable flue block boasts a double-wall design that maintains optimal temperatures and enhances safety. Read more...
DM44 - 180mm ID x 300mm high flue block
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Now only £40.99
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At a Glance

  • Premium natural pumice construction
  • Double-wall design maintains optimal flue gas temperature
  • HETAS approved and CE marked
  • Suitable for wood, solid fuel, oil, and gas appliances (excluding condensing systems)
  • Minimises condensation and soot build-up
  • Reliable thermal movement reducing crack and leak risks

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 DM44 - 180mm ID x 300mm high flue block is a premium product within the Isokern Double Module (DM) System Chimney range. This high-quality flue block is crafted to ensure superior performance and longevity, making it an excellent choice for chimneys. The double-wall design retains flue gas temperatures while preventing heat transfer to the outer casing.

This unique structure allows for thermal movement, reducing the risk of cracking and potential leaks. Notably, the DM system is available in three outer casing sizes—DM36, DM44, and DM54—and is suitable for a wide range of applications, including wood, solid fuel, oil, and gas (excluding condensing appliances such as Biomass and Pellets). Constructed from natural pumice, the flue block has excellent insulating properties, ensuring that the chimney quickly reaches and maintains optimal operational temperatures.

This feature not only improves appliance performance but also minimizes condensation and soot build-up. Endorsed by HETAS and CE marked, the Isokern DM system is both reliable and compliant with industry standards.

SKU: 59-127068

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, November 14th. 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
Product TypeChimney Flue Block
ModelDM44
Inner Diameter180mm
Height300mm
Outer Dimension310 x 310mm
MaterialNatural Pumice
Warranty10 Years
System Designation (DM)EN1858 - T450 N1 D 3 G(00)
System Designation (Liner)EN1857 - T600 N2 D 3 G
ComplianceHETAS Approved, CE Marked
Fuel CompatibilityWood, Solid Fuel, Oil, Gas (excluding condensing appliances)
Installation Instructions: • Always ensure the chimney system is completely de-energised and cooled before starting installation. • Refer to the detailed installation manual provided with your DM44 flue block for step-by-step guidance. • Check that the surrounding area complies with recommended distances to combustibles (0mm on straights; 38mm on offsets for the DM System). • Secure the flue block carefully in position, ensuring that joints are properly sealed and aligned to prevent potential leaks. • It is advisable to have the installation performed or inspected by a qualified professional to ensure safety and maximum efficiency. • Be aware of thermal movement allowances; the double-wall design is engineered to accommodate expansion and contraction, reducing the risk of damage over time.

The DM44 flue block’s key features include its double-wall design, natural pumice construction for superior insulation, suitability for various fuels, and compliance with HETAS and CE standards.

The DM44 flue block is compatible with wood-burning stoves, open fires, inserts, and cookers using solid fuel, oil, or gas. It is not suitable for condensing appliances, including Biomass and Pellets.

Pumice is a natural insulator that helps quickly achieve and maintain optimal flue gas temperatures. This improves the heating appliance's performance and reduces the likelihood of condensation or soot build-up.

The DM44 flue block has an inner diameter of 180mm and an outer dimension of 310 x 310mm, with a height of 300mm.

Yes, the DM44 flue block is designed for straightforward installation. Detailed installation instructions are available to guide you through the process.

Yes, the Isokern DM system, including the DM44 flue block, is HETAS approved and CE marked, ensuring it meets high-quality and safety standards.

The double-wall design maintains flue gas temperatures while preventing heat transference to the outer casing, allowing for thermal movement which reduces the risk of cracks and leaks.

 

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