Sigma Duplex (Outside Air) - BLACK
At a Glance
- - Innovative fresh air intake option
- - Efficient heat transfer connections
- - Advanced DuplicAir® combustion technology
- - Sleek widescreen design with self-locking door
- - Full-height handle for easy access
- - Built for modern aesthetics and high performance

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 Sigma Duplex (Outside Air) - BLACK is a superior built-in stove that combines style and functionality. This sophisticated appliance comes with a fresh air intake option and heat transfer connections, ensuring your home stays warm and cozy. Its modern widescreen door, equipped with a self-lock feature and a full-height handle, offers both safety and ease of use.
Additionally, the stove incorporates DuplicAir® technology, which optimises combustion and heat distribution, making it an efficient and eco-friendly choice for any household.
SKU: 134-14700000
Technical Specifications | |
---|---|
Dimensions | H910 x B1120 x D470 mm |
Kw Output | 3 u2013 9 kW |
Combustion Chamber | H370 x B500 x D220 mm |
Flue Diameter | 150 mm (6 inch) |
Weight | 143 kg |
Warranty | 2 Years |
Steel Colour | Black or Grey |
Control | DuplicAiru00ae |
Place Of Manufacture | Denmark |
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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The Sigma Duplex (Outside Air) - BLACK is a top-tier choice for anyone seeking a stylish and functional built-in stove. With innovative features like fresh air intake and DuplicAir® technology, this stove ensures efficient heating and modern aesthetics. Plus, National Flues guarantees nationwide delivery and serves both retail and trade customers with unbeatable prices and reliability.
The Sigma Duplex (Outside Air) - BLACK is designed to provide efficient and stylish heating for modern homes. Its features ensure optimal heat distribution and easy operation.
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