DM44 - 180° flue pipe entry kit (4 parts)
At a Glance
- - HETAS approved & CE marked
- - Efficient double wall design for superior insulation
- - Quick and easy installation process
- - Constructed from natural pumice for rapid flue gas temperature optimisation
- - Versatile compatibility with various heating appliances (inserts, stoves, open fires, cookers)

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
- Info
- Specs
- Install
- FAQs
Introducing the DM44 - 180° Flue Pipe Entry Kit, a top-of-the-line product in the Isokern Double Module (DM) block system series. This high-quality system chimney features a double wall design that ensures efficient flue gas temperature maintenance while minimising heat transfer to the outer casing. The clever separation between the inner and outer components allows for thermal movement, significantly reducing the risk of cracking, leaks, and stains.
Constructed with pumice, a natural insulator, this kit provides rapid flue gas temperature optimisation, leading to improved appliance performance shortly after lighting. Additionally, it maintains chimney warmth longer, further enhancing efficiency and reducing condensation and soot build-up. Available in three outer casing sizes – DM36, DM44, and DM54 – this kit is versatile and compatible with inserts, stoves, open fires, and cookers burning wood, solid fuel, oil, or gas (excluding condensing appliances such as biomass & pellets).
Proudly HETAS approved and CE marked, trust the DM44 to elevate your chimney system's reliability and efficiency.
SKU: 59-130719
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, April 8th. 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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The DM44 - 180° flue pipe entry kit is a top-notch choice for ensuring high efficiency and safety in your chimney system. We at National Flues take pride in offering this exceptional product, coupled with reliable nationwide delivery and exceptional customer service for both retail and trade clients.
The DM44 - 180° Flue Pipe Entry Kit is designed for safe and efficient flue pipe entry into a chimney system, optimising the performance of heating appliances.
Isokern, known for its high-quality chimney systems, utilises innovative materials like pumice to enhance efficiency, safety, and performance. National Flues proudly supplies these leading-edge products nationwide to both retail and trade customers.
