DM44 - 200mm ID starter flue block
At a Glance
- Superior Pumice insulation for rapid flue gas heating
- Double-module design reduces risk of cracking and leaks
- Versatile compatibility with wood-burning, oil, and gas appliances
- Quick and straightforward installation
- HETAS-approved and CE-marked for reliable safety and performance

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 - 200mm ID starter flue block is a top-tier component of the Isokern DM block system, known for its superior construction and outstanding insulation properties. This double-module system features a dual-wall design that efficiently maintains flue gas temperatures while minimising heat transference to the outer casing. The separation between the inner and outer components allows for thermal movement, reducing the risk of cracking, leaks, or stains.
Quick and straightforward to install, the DM44 is available in three outer casing sizes: DM36, DM44, and DM54. Suitable for use with various appliances, including wood-burning inserts, stoves, open fires, and cookers operating on solid fuel, oil, or gas (excluding condensing appliances like Biomass and Pellets). Pumice, a natural insulator, sets this system apart by quickly bringing flue gases to optimal temperatures, enhancing appliance performance, and reducing condensation and soot build-up.
The Isokern DM system is HETAS-approved and CE-marked, ensuring top-notch quality and safety.
SKU: 59-127684
Technical Specifications | |
---|---|
Product ID | 5042 |
SKU | 59-127684 |
Dimensions | 310 x 310mm, 150mm high |
Insulation Material | Pumice |
Outer Casing Options | DM36, DM44, DM54 |
Warranty | 10 Years |
Certifications | HETAS-approved, CE-marked |
Design Standards | EN1858 - T450 N1 D 3 G(00) / EN1857 - T600 N2 D 3 G |
Availability | TO ORDER (7 DAYS) |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, April 3rd. 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 - 200mm ID Starter Flue Block is a highly reliable and efficient choice for your chimney system, whether for residential or trade use. With our competitive prices and dependable nationwide delivery, National Flues ensures you get the best value and convenience. Secure online payments and trade accounts are available.
The DM44 - 200mm ID Starter Flue Block is designed to facilitate smoke and flue gas extraction from heating appliances. It helps maintain optimal temperatures and enhances the performance and safety of the chimney system.
National Flues is a leading supplier of high-quality fireplaces and flues across the UK, serving both retail and trade customers with a commitment to excellent value and reliable delivery.
