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DM44 - 200mm ID x 300mm high flue block (59-127683)

Enhance your chimney’s performance with the Isokern DM44 flue block, a premium pumice-based chimney solution engineered for superior heat retention and efficiency. Perfectly suited for wood, oil, gas, and solid fuel appliances, our DM44 is HETAS approved and CE marked, ensuring top-tier safety and reliability. Read more...
DM44 - 200mm ID x 300mm high flue block
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Now only £58.99
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At a Glance

  • Advanced double-wall system for optimal heat retention
  • Constructed from durable, natural pumice for longevity
  • Compatible with wood, oil, gas, and solid fuel appliances
  • HETAS approved and CE marked for uncompromised quality
  • Easy installation for both professionals and DIY enthusiasts

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 - 200mm ID x 300mm high flue block is an integral part of the Isokern DM (Double Module) block system, renowned for its high quality and durable construction. Designed to maintain optimum flue gas temperatures, the double-wall system effectively prevents heat transference to the outer casing, ensuring your chimney stays in perfect working order. Crafted from pumice, a natural insulator, this flue block not only retains heat more efficiently but also reduces the chance of cracking or leaking thanks to its ingenious thermal movement feature.

Available in three sizes—DM36, DM44, and DM54—this versatile product is suitable for use with all modern heating appliances. Whether you're burning wood, solid fuel, oil, or gas, the DM44 flue block delivers superior performance and reduces the likelihood of condensation and soot build-up.The Isokern DM system is HETAS approved and proudly carries the CE mark, reinforcing its quality and safety standards. Easy to install with straightforward guides, this flue block ensures a hassle-free setup, making it a reliable choice for both professionals and DIY enthusiasts.

SKU: 59-127683

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.

This is us — real advice over the phone, or at the counter, and real stock in our warehouse.

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Technical Specifications
Product NameDM44 - 200mm ID x 300mm high flue block
Dimensions200mm inner diameter, 300mm high (Overall approx. 310 x 310 mm)
MaterialPumice
System DesignationsEN1858 - T450 N1 D 3 G(00), EN1857 - T600 N2 D 3 G
CertificationsHETAS approved, CE marked
Warranty10 Years
Distance To Combustibles0 on straights; 38mm on offsets (DM System)
CompatibilityWood, Solid Fuel, Oil, Gas Appliances
The DM44 flue block is designed for straightforward, hassle-free installation. Before beginning, please review the comprehensive installation guide supplied with the product. Key steps include ensuring all chimney components are correctly aligned, verifying the required clearance distances (38mm for offsets), and following standard safety protocols. Whether you are a seasoned professional or a DIY enthusiast, these detailed instructions will help you install the DM44 safely and efficiently.

The DM flue block system is available in three sizes: DM36, DM44, and DM54.

Yes, the DM44 flue block is compatible with wood, solid fuel, oil, and gas appliances. However, it is not recommended for condensing appliances such as biomass and pellet systems.

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

Pumice is a natural insulator that quickly reaches optimum temperature, improves heating performance, and reduces condensation and soot build-up.

Absolutely, the DM44 is suitable for use with inserts, stoves, open fires, and cookers.

The DM44 is straightforward to install, and it comes with comprehensive installation guides to assist you.

The double wall system maintains flue gas temperatures while preventing heat transference to the outer casing. The separation of inner and outer components allows for thermal movement, reducing the risk of cracking and subsequent leaking or staining.

 

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