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DM44 - 440mm sq. x 300mm high casing & soot door (59-130726)

National Flues presents the DM44 - 440mm square casing & soot door, a premium solution in chimney systems. This high-quality, HETAS approved, and CE marked appliance is designed for optimal flue performance and minimal heat loss, making it an ideal choice for stoves, inserts, open fires, and cookers. Read more...
DM44 - 440mm sq. x 300mm high casing & soot door
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Now only £234.99
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  • Fast deliveryMonday, November 17th*
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At a Glance

  • Durable Isokern DM block system for lasting performance
  • Maintains optimal flue gas temperatures
  • Minimised heat transference enhances safety
  • Quick and straightforward installation
  • Suitable for stoves, inserts, open fires, and cookers
  • HETAS approved and CE marked for UK compliance
  • Constructed from natural pumice for superior insulation

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 - 440mm square casing & soot door is part of our premium line of high-quality Isokern DM block system chimneys. This double-wall system is designed to maintain flue gas temperatures while minimizing heat transference to the outer casing. The separation of the inner and outer components allows for thermal movement, significantly reducing the risk of cracking, leaking, or staining.

The DM44 is straightforward and quick to install, available in three outer casing sizes: DM36, DM44, and DM54. This versatile casing is suitable for use with inserts, stoves, open fires, and cookers burning wood, solid fuel, oil, or gas (excluding condensing appliances like Biomass & Pellets).Constructed from pumice, a natural insulator, the DM system allows flue gases to rapidly reach optimal temperatures, enabling your heating appliance to perform at its best shortly after ignition. The chimney remains warmer for longer as the heat output decreases, enhancing performance and reducing the likelihood of condensation and soot buildup.

Additionally, the Isokern DM system is HETAS approved and CE marked, with a designation number: Double Module DM System Chimney* T450 N1 D 3 G(00). For smooth installation, please refer to the included instructions in our guides.

SKU: 59-130726

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
SKU59-130726
Casing Dimensions440mm square x 300mm high
MaterialPumice
System TypeDouble-wall Isokern DM block system
ComplianceHETAS approved, CE marked
Warranty10 Years
Applicable AppliancesStoves, inserts, open fires, cookers (non-condensing)
Additional OptionsOptional accessories available for flue connections and supports
The DM44 casing and soot door are engineered for a straightforward, quick installation. Begin by reviewing the comprehensive installation guide included with the product. Ensure that all components are free from damage before proceeding. It is important to confirm that any additional optional accessories, such as flue connector kits and support brackets, are compatible with your specific installation requirements. Prior to installation, verify that the surrounding installation area complies with safety distances as prescribed (0mm on straights and 38mm on offsets for the DM System). For any uncertainties, consult a professional installer to ensure that all guidelines are met and installation is carried out safely.

The DM44 casing and soot door is used in conjunction with various heating appliances, such as inserts, stoves, open fires, and cookers, to maintain flue gas temperatures while minimizing heat transference.

No, the DM44 is not suitable for condensing appliances, including Biomass and Pellet systems.

Pumice is a natural insulator, which helps flue gases reach optimal temperatures faster and maintains heat longer, thereby improving appliance performance and reducing condensation and soot buildup.

The double-wall system of the DM44 maintains flue gas temperatures and prevents heat transference to the outer casing. This separation also allows for thermal movement, reducing the risk of cracking, leaking, or staining.

Yes, the Isokern DM44 is HETAS approved and CE marked, guaranteeing its compliance with UK safety and performance standards.

The DM system casings are available in three sizes: DM36, DM44, and DM54.

The DM44 casing and soot door are designed for quick and straightforward installation. Detailed installation guides are provided to ensure a smooth setup.

 

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