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Large Tinderbox Multifuel Stove, 5kW, ECODesign with up and out full height kit (137-LMF-TBOX-outside)

Discover the ultimate heating solution with the Large Tinderbox Multifuel Stove, 5kW, ECODesign kit – a highly efficient, eco-friendly, and versatile stove package perfect for external installations. With its multifuel capability and up and out full height kit, you get robust performance and flexibility backed by our free design service. Expand...
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  • Fast deliveryWednesday, November 19th*
  • Best PriceCall us to beat any price you found online.
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At a Glance

  • Efficient, eco-friendly heating for medium-sized living spaces
  • Multifuel capability for versatile fuel choices
  • Robust design engineered for external installations
  • Up and out full height kit included for superior performance
  • Free design service available to plan your perfect setup

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

🛠 What You Get: Premium Stove and Complete External Two Storey Kit

Ready for installation. A full external flue system that runs up the outside of a two storey building. Ideal when internal routing isn’t practical. No chimney required. 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.

 

Large Tinderbox Multifuel Stove, 5kW, ECODesign :: with up and out full height kit :: with up and... Discover the ultimate heating solution with the Large Tinderbox Multifuel Stove, 5kW, ECODesign kit – a highly efficient, eco-friendly, and versatile stove package perfect for external installations. With its multifuel capability and up and out full height kit, you get robust performance and flexibility backed by our free design service.

Enhance your home’s warmth with eco-certified, cost-effective technology today!

SKU: 137-LMF-TBOX-outside

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Wednesday, November 19th. 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.

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
37-125-031 TWPro MB - 45° Bend - Ø 125 1
37-125-010 TWPro MB - Pipe 1000mm - Ø 125 7
37-125-034 TWPro MB - 135° Tee - Ø 125 1
37-125-036 TWPro MB - Tee Cap - 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
58-125-160 TWPro MB - Retro Fit Base Support - Ø 125 1
58-125-052 TWPro MB - Wall Support 80-130mm - Ø 125 3
15-125-100 Wall Sleeve 45° Adjustable - Ø 125 1
58-125-114 TWPro MB - MB Round Finishing Plate 45° (1 Piece) - Ø 125 1
58-125-097 TWPro MB - Finishing Plate 30°-45° - Ø 125 1
37-125-012 TWPro MB - Pipe 250mm - Ø 125 1
Technical Specifications
Nominal Heat Output5kW
Heat Output Range4-7.5kW
Energy Efficiency RatingA+
Wood Burning Efficiency81%
CO Emissions0.09% @ 13% O2
Maximum Log Length480mm
Flue Outlet5' Top or Rear
Dimensions550mm (H) x 579mm (W) x 383mm (D)
Weight86kg
Eco Design ApprovedYes
Smoke Control ExemptYes
Cleanburn SystemYes
Airwash SystemYes
Direct Air KitOptional
Grate OptionOptional
Package Components Details37-125-005, 37-125-012, 37-125-011, `SKU`, 37-125-010, 37-125-016, 37-125-031, `SKU`, 37-125-034, 37-125-036, 58-125-160, `SKU`, 58-125-052, 37-125-112, 58-125-097, `SKU`, 58-125-114, 15-125-100 (TWPro MB - Flat Adaptor - Ø 125, TWPro MB - Pipe 250mm - Ø 125, TWPro MB - Pipe 500mm - Ø 125, `Product_Name`, TWPro MB - Pipe 1000mm - Ø 125, TWPro MB - Adjustable Pipe 250-350mm - Ø 125, TWPro MB - 45° Bend - Ø 125, `Product_Name`, TWPro MB - 135° Tee - Ø 125, TWPro MB - Tee Cap - Ø 125, TWPro MB - Retro Fit Base Support - Ø 125, `Product_Name`, TWPro MB - Wall Support 80-130mm - Ø 125, TWPro MB - Rain Cap with Mesh - Ø 125, TWPro MB - Finishing Plate 30°-45° - Ø 125, `Product_Name`, TWPro MB - MB Round Finishing Plate 45° (1 Piece) - Ø 125, Wall Sleeve 45° Adjustable - Ø 125)
Package Components37-125-005, 37-125-012, 37-125-011, `SKU`, 37-125-010, 37-125-016, 37-125-031, `SKU`, 37-125-034, 37-125-036, 58-125-160, `SKU`, 58-125-052, 37-125-112, 58-125-097, `SKU`, 58-125-114, 15-125-100
This package is a complete installation kit custom-designed for the Large Tinderbox Multifuel Stove, 5kW, ECODesign variant. Engineered specifically for external applications, it suits both single-storey and multi-storey buildings. Please note, while we do not provide installation services, we offer a free design service to help you plan the ideal setup. Refer to the main image for a clear view of the product’s robust design, ensuring you can see every detail before purchase.

The Large Tinderbox Multifuel Stove has a 5kW output, making it suitable for medium-sized rooms.

Yes, the Large Tinderbox Multifuel Stove meets all ECODesign 2022 standards, ensuring it is environmentally friendly and highly efficient.

Absolutely, this stove is Smoke Control Area Exempt, which means it can be used in urban areas with strict smoke regulations.

This stove boasts an impressive efficiency rate of 81.3%, making the most of the fuel you use.

The Large Tinderbox Multifuel Stove is designed to burn a variety of fuels, including wood and solid fuels.

The Large Tinderbox Multifuel Stove has an A+ Energy Rating, signifying its excellent energy efficiency.

Yes, National Flues provides reliable nationwide delivery for all our stoves, including the Large Tinderbox Multifuel Stove.

Want this Large Tinderbox Multifuel Stove, 5kW, ECODesign with up and out full height kit supplied and ready to fit? Save £££s when you buy a complete installation package

When you choose a package, you get the premium Large Tinderbox Multifuel Stove, 5kW, ECODesign with up and out full height kit shown on this page plus a complete installation kit, so everything is ready for your installer in one delivery.

For single-storey spaces such as garden rooms, bungalows or extensions, pick the One Storey Kit – it is designed to work without an existing chimney. In two-storey homes, choose the Inside Two-Storey Kit if you want the flue to rise internally and exit through the roof, or the Up & Out Two-Storey Kit if you prefer the flue to run up inside and then outside the wall – both options avoid the need for a chimney.

If you already have a chimney, the Chimney Pack partners Large Tinderbox Multifuel Stove, 5kW, ECODesign with up and out full height kit with a 10m flexible liner and all the adaptors and fixings needed to connect and safely line the chimney. It's our most popular option and usually offers the best overall value when bought with this stove.

Not sure which package is right for your project? Call our team on 01670 206 999, 8am–5pm, and we'll talk it through with you.

Just the Stove
Just the Stove £648.99
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One Storey
One Storey £1,160.99
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Inside Kit
Inside Kit £1,870.99
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Chimney Kit
Chimney Kit £970.99
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