Free Delivery over £100+ 5on Trustpilot Browse our popular stoves Fast Mainland UK Delivery Buy stoves with install packs Call 01670 206 999 for help

DM44 - 200mm ID x 100mm offset block (59-127686)

Discover the DM44 - 200mm ID x 100mm Offset Block by Isokern, a premium solution for chimney flue systems made from natural pumice. This high-performance offset block is designed to optimise heat retention, ensuring your stove, insert, or open fire operates at peak efficiency. Read more...
Now only £81.99
Give us a call if you find it cheaper and we'll normally price match.
  • Fast deliveryMonday, November 17th*
  • Best PriceCall us to beat any price you found online.
  • Secure checkoutCard· Google/Apple Pay· Klarna· Paypal

 

Payment Options

At a Glance

  • Made from natural pumice for superior insulation
  • Double wall design maintains optimal flue gas temperatures
  • HETAS approved and CE marked for high safety standards
  • Versatile design suitable for stoves, open fires, and cookers
  • Compatible with multiple outer casing sizes: DM36, DM44, DM54

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 100mm offset block is an integral part of the Isokern Pumice chimney flue system. This high-quality system chimney features a double wall design that ensures optimal flue gas temperatures while preventing heat transference to the outer casing. The unique construction provides the flexibility needed for thermal movement, thereby reducing the risk of cracks, leaks, or stains.

Quick and easy to assemble, the DM44 comes in three outer casing sizes: DM36, DM44, and DM54.Made from pumice, a natural insulator, this block ensures your chimney retains heat longer, aiding appliance performance and minimizing condensation and soot deposits. This versatility makes it suitable for various heating appliances, including inserts, stoves, open fires, and cookers burning wood, solid fuel, oil, or gas (excluding condensing appliances like Biomass and Pellets).The Isokern DM system is both HETAS approved and CE marked, meeting the highest safety and performance standards. For detailed installation instructions, please refer to our comprehensive guides.

SKU: 59-127686

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.

Technical Specifications
Product NameDM44 - 200mm ID x 100mm Offset Block
MaterialPumice
Inner Diameter200mm
Offset Height100mm
Outer Casing OptionsDM36, DM44, DM54
Offset Details56mm depth, 30° offset
Warranty10 Years
Distance To Combustibles0mm on straights; 38mm on offsets (DM System)
• Read the comprehensive installation guides provided to ensure a proper setup. • For DM system installations, maintain a minimum clearance of 38mm to combustible materials on offset sections. • Verify that all components are securely assembled to facilitate safe and efficient performance. • Seek professional assistance if there is any uncertainty during the installation process.

The DM44 is suitable for use with inserts, stoves, open fires, and cookers burning wood, solid fuel, oil, or gas. However, it is not suitable for condensing appliances, including Biomass and Pellets.

The double wall design of the DM44 helps maintain optimal flue gas temperatures and prevents heat transference to the outer casing, reducing the risk of cracks, leaks or stains.

Pumice is a natural insulator, which allows the flue gases to reach optimal temperature quickly and maintains the heat within the chimney for longer periods, improving performance and minimizing condensation and soot build-up.

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

For accurate installation, refer to the comprehensive installation instructions provided in our guides. Ensure a minimum distance of 38mm to combustibles on offset chimneys.

The Isokern DM system is available in three outer casing sizes: DM36, DM44, and DM54.

Pumice's natural insulating properties keep the chimney's flue gases at optimal temperature quickly and retain the heat longer, enhancing appliance performance and reducing condensation and soot build-up.

 

Call the Experts   8am-5pm
👀 6 people watching this