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DM44 - 180mm ID x 440mm sq. DM support block (59-130721)

At National Flues, our DM44 Support Block stands as the pinnacle of chimney efficiency and durability. This premium accessory for your chimney, flue, or fireplace system is crafted from natural pumice to ensure optimal insulation and performance. Read more...
DM44 - 180mm ID x 440mm sq. DM support block
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Now only £81.99
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At a Glance

  • 180mm ID x 440mm square design
  • Lower spigot for easy adaptor connection
  • Constructed from high-quality natural pumice
  • Double wall construction for efficient heat retention and safety
  • Versatile compatibility with stoves, inserts, open fires, and cookers burning wood, oil, gas, or solid fuel

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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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 440mm sq. DM support block is an integral part of the Isokern DM block system—a high-quality system chimney that combines durability and efficiency. This double wall system ensures optimal flue gas temperatures while preventing heat transfer to the outer casing.

By allowing thermal movement, it minimizes the risk of cracks and subsequent leakage or staining, making it a highly reliable choice for various heating applications.Constructed from pumice, a natural insulator, the DM block maintains an optimal temperature for flue gases, enhancing the performance of your heating appliance. Pumice's unique insulating properties enable quick warmth, efficient heating, and extended performance time by retaining heat longer. This reduces condensation and soot build-up, ensuring a clean and efficient chimney system.The DM block system is available in three casing sizes—DM36, DM44, and DM54—offering flexibility for different installation requirements.

This support block specifically measures 180mm in internal diameter and 440mm square, featuring a lower spigot for easy adaptor connection. It is compatible with inserts, stoves, open fires, and cookers using wood, solid fuel, oil, or gas (excluding condensing appliances like Biomass & Pellets).Certified and approved by HETAS and CE marked, the Isokern DM system meets high safety and performance standards. Detailed installation instructions are provided to ensure seamless assembly and integration into your heating system.

SKU: 59-130721

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
Internal Diameter180mm
Square Dimension440mm
MaterialPumice
System CompatibilityDesigned for stoves, inserts, open fires, and cookers (wood, oil, gas, and solid fuel; excludes condensing appliances)
CertificationHETAS Approved, CE marked
Warranty10 Years
• Follow the detailed installation instructions provided to ensure proper assembly. • Ensure the lower spigot is securely fitted to the adaptor for a reliable connection. • Confirm that the product meets the required distance to combustibles (0mm on straights; 38mm on offsets for DM Systems). • Note that the DM44 is not suitable for condensing appliances like Biomass & Pellets, so verify compatibility before installation. • Consider professional consultation if unfamiliar with chimney installations.

The DM44 Support Block is designed for use in chimneys with stoves, inserts, open fires, and cookers burning wood, solid fuel, oil, or gas, excluding condensing appliances like Biomass & Pellets.

Pumice is a natural insulator, enabling the chimney to reach optimal temperatures quickly while retaining heat longer. This enhances the performance of heating appliances and reduces the likelihood of condensation and soot buildup.

Yes, the DM44 Support Block is straightforward to install. Detailed installation instructions are provided to ensure easy and correct assembly.

Yes, the DM44 is HETAS Approved and CE marked, ensuring it meets high safety and performance standards.

The Isokern DM block system comes in three casing sizes: DM36, DM44, and DM54, offering flexibility to suit different installation requirements.

Yes, the DM44 is suitable for use with gas appliances, as well as wood, solid fuel, and oil appliances. However, it is not suitable for condensing appliances like Biomass & Pellets.

The DM44's construction from natural pumice ensures it retains heat efficiently and reduces the risk of cracking. Its double wall design maintains flue gas temperatures while preventing heat transfer, ensuring safe and efficient operation.

 

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