DM44 - 820mm sq. capping for brickwork
At a Glance
- - Part of the high performance Isokern DM system
- - 820mm square capping designed specifically for brickwork
- - Manufactured with high-quality pumice for superior insulation
- - Double module design to maintain flue gas temperatures and reduce heat transference
- - HETAS-approved and CE marked for safety and reliability
- - Suitable for multiple heating appliances (wood, solid fuel, oil, gas)

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: [email protected]
- Info
- Specs
- Install
- FAQs
The DM44 - 820mm Square Capping for Brickwork is a top-tier component of the Isokern DM block system, renowned for its high-quality construction and performance. The double module (DM) design ensures that flue gas temperatures are maintained, while preventing heat transference to the outer casing. This is crucial for protecting your chimney and promoting longevity.
The innovative separation between inner and outer walls allows for thermal movement, a clever feature that reduces the risk of cracking, leakage, or staining. This system is quick and simple to install and is available in three sizes: DM36, DM44, and DM54. Not limited by the type of appliance it supports, the DM system is perfect for inserts, stoves, open fires, and cookers that use wood, solid fuel, oil, or gas (excluding condensing appliances such as Biomass and Pellet systems).
The unique insulating properties of pumice, a natural heat insulator, allow the flue gases to rapidly reach optimal temperatures, enabling better performance from your heating appliance. This feature keeps the chimney warmer for longer, reducing condensation and the build-up of soot. The Isokern DM system is HETAS-approved and CE marked, ensuring it meets the highest standards.
Installation is straightforward with detailed guides available for your ease.
SKU: 59-130724
Technical Specifications | |
---|---|
SKU | 59-130724 |
Model | DM44 |
Size | 820mm square |
Material | Pumice |
Warranty | 10 Years |
System Compatibility | Inserts, stoves, open fires, cookers (wood, solid fuel, oil, gas) |
Standards | HETAS approved, CE marked |
Design | Double module for maintaining optimal flue gas temperatures and preventing heat transference |
Installation | Quick and straightforward with comprehensive installation guides |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, April 4th. If you need faster stove or fireplace delivery please give us a call. We can often reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.
Warranty & Returns +
All our products come with warranties. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.
Price Match Guarantee +
We will match any price like for like. If you find it cheaper within 48 hours, we'll refund the difference.
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National Flues Ltd Verdict
The DM44 – 820mm Square Capping for Brickwork is an exceptional choice for those who demand high quality and reliability. At National Flues, we provide timely delivery across the UK to both retail and trade customers. Rarely beaten on price, this product exemplifies our commitment to excellence.
The DM44 - 820mm Square Capping for Brickwork is designed to protect brick chimneys by maintaining flue gas temperatures and preventing heat transference, thereby enhancing performance and longevity.
National Flues is a leading supplier of fireplaces and flues in the UK, known for their unbeatable prices, reliable nationwide delivery, and exceptional customer service. They cater to both retail and trade customers, offering secure online payments and trade accounts.
