Large Tinderbox on Log Box, 5kW, ECODesign with masonry1 chimney kit (137-LLG-TBOX-chimney)
Ready for installation. This kit is made for use with an existing chimney. Includes everything needed to connect and safely line your flue system. 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.

At a Glance
- High-efficient wood-burning stove for optimal warmth and reduced fuel costs
Eco-friendly design meeting ECODesign standards for sustainable heating
Specifically engineered for Class 1 masonry chimneys ensuring flawless performance
Complete installation kit including key components and a free design service
SO-T1 package – a special offer with a 10m flex pack bundle
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, June 10th. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please give us a call. We can sometimes 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. 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, on a retail basis. Give us a call if you find it cheaper and want to buy from us.
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
Large Tinderbox on Log Box, 5kW, ECODesign with masonry1 chimney kit Experience the exceptional efficiency and style of our Large Tinderbox on Log Box, 5kW, ECODesign. This high-performance wood-burning stove comes complete with a specialized masonry1 chimney kit, making it a perfect eco-friendly heating solution for modern UK homes. Enjoy the benefits of reduced fuel costs, superior warmth, and our complimentary design service to craft the ideal installation layout.
Enhance your living space with a stove that combines traditional charm with contemporary efficiency.
Features & Benefits
High-Efficiency Heating
Delivers exceptional warmth while reducing fuel costs, ensuring comfort throughout your home.
Eco-Friendly Operation
Complies with ECODesign standards, guaranteeing lower emissions and greener operation.
Masonry1 Chimney Kit
Tailor-made for Class 1 masonry chimneys, supporting safe and efficient venting.
Complete Installation Kit
Includes all necessary components along with our free design service to help plan the perfect setup.
SO-T1 Package
Offers a cost-effective, bundled 10m flex pack to ensure reliable and versatile installation.
SKU: 137-LLG-TBOX-chimney
SKU | Product Name | Qty |
---|---|---|
35Z-15-10 | 10 Meter Lifetime Guarantee Flexible Flue | 1 |
25-125-MAE | Screw-FIX Adaptor to SW - Ø 125 | 1 |
25-125-PHCMT2 | MI-FLEX Pot Hanging Cowl (Terracotta) - Ø 125 | 1 |
94-REG-F | Register Plate (F) - 900x495, no access hole - Ø 125 & 150 | 1 |
20-CNP | Chimney Notice Plate | 1 |
13-CO-7B | CO Alarm - Firehawk CO7B | 1 |
67-125-011 | VIT-Smooth - 500mm Pipe - Ø 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 |