Small Tinderbox Multifuel Stove, 5kW, ECODesign with internal full height kit (137-SMF-TBOX-inside)
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Fast deliveryMonday, November 17th*
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Best PriceCall us to beat any price you found online.
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At a Glance
- Efficient 5kW output providing cosy warmth in small to medium rooms.
- Eco Design approved with low emissions for a greener home.
- Versatile multifuel capability – burns wood and smokeless fuels.
- Integrated internal full height kit for a seamless installation.
- Comes with a free design service to tailor your installation perfectly.
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
- Details
- Specs
- Install/Packs
- FAQs
Ready for installation. Designed for internal installation in two storey buildings. The flue runs through the inside of your property and exits through the roof. No existing chimney needed. Our experts offer a free design service if you need a variation on this system. Give us a call on 01670 206 999 if you think you might need a few changes to this standard kit.
Small Tinderbox Multifuel Stove, 5kW, ECODesign :: with internal full height kit :: with internal... Discover the eco-friendly, efficient heat of the Small Tinderbox Multifuel Stove, 5kW, ECODesign. This complete package, featuring an internal full height kit, offers a seamless integrated installation solution paired with our free design service.
Perfect for small to medium rooms, it delivers versatile multifuel performance, low emissions, and a modern, contemporary appeal – an ideal choice for anyone seeking stylish and efficient home heating.
SKU: 137-SMF-TBOX-inside
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.
This is us — real advice over the phone, or at the counter, and real stock in our warehouse.
| SKU | Product Name | Qty |
|---|---|---|
| 37-125-005 | TWPro MB - Flat Adaptor - Ø 125 | 1 |
| 37-125-016 | TWPro MB - Adjustable Pipe 250-350mm - Ø 125 | 1 |
| 37-125-010 | TWPro MB - Pipe 1000mm - Ø 125 | 8 |
| 37-125-073 | TWPro MB - Ventilated Firestop Plate - Ø 125 | 2 |
| 58-125-075 | TWPro MB - Firestop Cover Plate (MB) - Ø 125 | 1 |
| 37-125-011 | TWPro MB - Pipe 500mm - Ø 125 | 1 |
| 37-125-112 | TWPro MB - Rain Cap with Mesh - Ø 125 | 1 |
| 12-15-LD-TILE | MI-Flash - No 1.5 Tile Black EPDM (125-225mm) LD-705x501 | 1 |
| 58-125-082 | TWPro MB - Storm Collar - Ø 125 | 1 |
| 13-MESHKIT-125 | Loft Mesh Kit (125mm) | 1 |
| Technical Specifications | |
|---|---|
| Nominal Heat Output | 5kW |
| Heat Output Range | 4-7.5kW |
| Energy Efficiency Rating | A+ |
| Wood Burning Efficiency | 81% |
| CO Emissions | 0.09% @ 13% O2 |
| Maximum Log Length | 480mm |
| Flue Outlet | 5' Top or Rear |
| Dimensions | 550mm (H) x 579mm (W) x 383mm (D) |
| Weight | 86kg |
| Eco Design Approved | Yes |
| Smoke Control Exempt | Yes |
| Cleanburn System | Yes |
| Airwash System | Yes |
| Direct Air Kit | Optional |
| Grate Option | Optional |
| Package Components Details | 37-125-005, 37-125-011, 37-125-010, `SKU`, 37-125-016, 37-125-073, 58-125-075, `SKU`, 58-125-082, 37-125-112, 12-15-LD-TILE, `SKU`, 13-MESHKIT-125 (TWPro MB - Flat Adaptor - Ø 125, TWPro MB - Pipe 500mm - Ø 125, TWPro MB - Pipe 1000mm - Ø 125, `Product_Name`, TWPro MB - Adjustable Pipe 250-350mm - Ø 125, TWPro MB - Ventilated Firestop Plate - Ø 125, TWPro MB - Firestop Cover Plate (MB) - Ø 125, `Product_Name`, TWPro MB - Storm Collar - Ø 125, TWPro MB - Rain Cap with Mesh - Ø 125, MI-Flash - No 1.5 Tile Black EPDM (125-225mm) LD-705x501, `Product_Name`, Loft Mesh Kit (125mm)) |
| Package Components | 37-125-005, 37-125-011, 37-125-010, `SKU`, 37-125-016, 37-125-073, 58-125-075, `SKU`, 58-125-082, 37-125-112, 12-15-LD-TILE, `SKU`, 13-MESHKIT-125 |
Need a complete stove & installation kit?
Choose your package - each includes the premium stove and the complete installation kit in the price. For single-storey builds (garden rooms, extensions), pick the Single Storey Kit - no existing chimney needed. In two-storey homes, choose the Internal Two-Storey Kit (flue routes inside and out through the roof) or the External Two-Storey Kit (flue runs up the outside) - neither requires a chimney. If you already have a chimney, the Chimney Pack includes a 10 m liner and everything to connect and safely line it. Need a tweak or a custom layout? Our experts offer a free design service - call 01670 206 999.
