Neverdark
SKU:
Neverdark TLC Thermobox – Left Corner
Neverdark TLC Thermobox – Left Corner
Made to Order
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Payment & Security
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Delivery & Returns
Delivery & Returns
Delivery
- Free UK Mainland delivery on all Smart Fire and Neverdark products.
- Smart Fire and Neverdark fireplaces are made to order and delivered directly by the supplier’s own logistics team from London, not by a courier or pallet network.
- Additional charges apply to Scottish Highlands and rural areas. Please contact us before ordering for a delivery quote.
- We do not currently deliver to Northern Ireland, the Isle of Man, the Channel Islands, or the Scottish offshore islands (Orkney, Shetland and the Western Isles).
- Delivery date and time are agreed with our supplier’s logistics team in advance. If the delivery cannot be completed at the agreed time, re-delivery charges apply.
- Lead times are confirmed at the order stage.
Returns
- Smart Fire and Neverdark fireplaces are made to order and manufactured to your specification. Under UK consumer law, bespoke goods made to order are exempt from the 14-day statutory right to cancel.
- Returns are accepted only if the product arrives faulty, damaged in transit, or is incorrect.
- All faulty or incorrect product returns are arranged directly with the supplier and handled by their logistics team.
- Please inspect your product carefully at the time of delivery and report any visible damage before signing.
For full details, please refer to our Shipping Policy and Refund & Returns Policy.

The TLC is the left-corner Thermobox for the Firetec and Automatic burners. It wraps the installation into a room corner, with the flame face presented on the front and the left return of the enclosure sitting flush into the adjacent wall — integrating the fireplace into the architecture of the corner itself.
The Corner Configuration
The TLC positions the burner so that the flame face is on the front of the installation, with the left side of the enclosure forming part of the wall return at the corner. The result is a fireplace that reads as part of the room's geometry rather than something set into a flat wall. Long and short glass borders and a reflection screen are available to develop the opening further.
Insulation — Why It Matters
What sets every Neverdark Thermobox apart from standard bioethanol housings is the quality of its insulation. The steel enclosure is insulated to a level that eliminates the heat clearance distances that standard uninsulated boxes require. A Thermobox can be built directly into a timber-framed wall, integrated into MDF cabinetry, or positioned immediately beneath a television — situations where an uninsulated housing simply cannot be used safely. That engineering is reflected in the price, and it is what makes these installations genuinely flexible rather than just architecturally attractive.
Standard and Hidden Installation
Standard installation includes a front frame that sits over the opening and covers the surrounding wall finish — the right choice where the surrounding material needs to be concealed or where a defined border suits the design. The hidden installation has no front frame: the Thermobox sits completely flush inside the opening, with only the flame visible and the wall plane unbroken around it. In both installation configurations, the control and refuelling panel opens from the top of the unit rather than the front face. This keeps the front of the installation clean regardless of which configuration is chosen. On Firetec-based installations, the motion sensor lid lifts at the wave of a hand — no contact required.
Made to Order
All Thermoboxes are made to order. Lead times are typically 6–8 weeks. Contact us before ordering to confirm the correct model, size, and configuration for your burner and installation. Custom widths are available on request.
Available Options
- Sizes (standard): 800, 900, 1,100, 1,300, 1,600, 1,800, 2,200, 2,700 mm (custom on request)
- Compatible burners: Neverdark Automatic, Neverdark Firetec
- Installation type: Standard (with front frame) or Hidden (flush, no frame)
- Reflection screen: Optional
- Long glass border: Optional
- Short glass border: Optional
- Canopy: Optional
- Flame decorations: Optional
Prices for optional extras are listed in the Specification tab or available on request.
Key Specifications
- Product type: Insulated Thermobox for built-in bioethanol fireplace
- Brand: Neverdark
- Compatible burner: Neverdark Automatic or Firetec
- Use: Indoor
- Made to order: Yes
Dimensions — Standard Installation
- 800 mm — D: 460 mm | H: 340 mm | Burner length: 700 mm
- 900 mm — D: 460 mm | H: 340 mm | Burner length: 800 mm
- 1100 mm — D: 460 mm | H: 340 mm | Burner length: 1000 mm
- 1300 mm — D: 460 mm | H: 340 mm | Burner length: 1200 mm
- 1600 mm — D: 460 mm | H: 340 mm | Burner length: 1500 mm
- 1800 mm — D: 460 mm | H: 340 mm | Burner length: 1500 mm
- 2200 mm — D: 460 mm | H: 340 mm | Burner length: 2000 mm
- 2700 mm — D: 460 mm | H: 340 mm | Burner length: 2500 mm
Dimensions — Hidden Installation
- 800 mm — D: 400 mm | H: 350 mm
- 900 mm — D: 400 mm | H: 350 mm
- 1100 mm — D: 400 mm | H: 350 mm
- 1300 mm — D: 400 mm | H: 350 mm
- 1600 mm — D: 400 mm | H: 350 mm
- 1800 mm — D: 400 mm | H: 350 mm
- 2200 mm — D: 400 mm | H: 350 mm
- 2700 mm — D: 400 mm | H: 350 mm
Materials & Installation
- Material: Steel
- Insulation: Fully insulated — suitable for combustible surrounds
- Colour / Finish: Matte black
- Installation type: Built-in / recessed
- Installation variants: Standard (with front frame) or Hidden (flush)
- Power required: Yes (for burner — see burner product page)
- Chimney required: No
Optional Extras
- Installation type: Standard (with front frame) or Hidden (flush, no frame)
- Reflection screen: Optional
- Long glass border: Optional
- Short glass border: Optional
- Canopy: Optional
- Flame decorations: Optional
Specifications vary by size and configuration. Contact us for a full specification sheet for your chosen size.
The TLC is the left-corner Thermobox for the Firetec and Automatic burners. It wraps the installation into a room corner, with the flame face presented on the front and the left return of the enclosure sitting flush into the adjacent wall — integrating the fireplace into the architecture of the corner itself.
The Corner Configuration
The TLC positions the burner so that the flame face is on the front of the installation, with the left side of the enclosure forming part of the wall return at the corner. The result is a fireplace that reads as part of the room's geometry rather than something set into a flat wall. Long and short glass borders and a reflection screen are available to develop the opening further.
Insulation — Why It Matters
What sets every Neverdark Thermobox apart from standard bioethanol housings is the quality of its insulation. The steel enclosure is insulated to a level that eliminates the heat clearance distances that standard uninsulated boxes require. A Thermobox can be built directly into a timber-framed wall, integrated into MDF cabinetry, or positioned immediately beneath a television — situations where an uninsulated housing simply cannot be used safely. That engineering is reflected in the price, and it is what makes these installations genuinely flexible rather than just architecturally attractive.
Standard and Hidden Installation
Standard installation includes a front frame that sits over the opening and covers the surrounding wall finish — the right choice where the surrounding material needs to be concealed or where a defined border suits the design. The hidden installation has no front frame: the Thermobox sits completely flush inside the opening, with only the flame visible and the wall plane unbroken around it. In both installation configurations, the control and refuelling panel opens from the top of the unit rather than the front face. This keeps the front of the installation clean regardless of which configuration is chosen. On Firetec-based installations, the motion sensor lid lifts at the wave of a hand — no contact required.
Made to Order
All Thermoboxes are made to order. Lead times are typically 6–8 weeks. Contact us before ordering to confirm the correct model, size, and configuration for your burner and installation. Custom widths are available on request.
Available Options
- Sizes (standard): 800, 900, 1,100, 1,300, 1,600, 1,800, 2,200, 2,700 mm (custom on request)
- Compatible burners: Neverdark Automatic, Neverdark Firetec
- Installation type: Standard (with front frame) or Hidden (flush, no frame)
- Reflection screen: Optional
- Long glass border: Optional
- Short glass border: Optional
- Canopy: Optional
- Flame decorations: Optional
Prices for optional extras are listed in the Specification tab or available on request.
Key Specifications
- Product type: Insulated Thermobox for built-in bioethanol fireplace
- Brand: Neverdark
- Compatible burner: Neverdark Automatic or Firetec
- Use: Indoor
- Made to order: Yes
Dimensions — Standard Installation
- 800 mm — D: 460 mm | H: 340 mm | Burner length: 700 mm
- 900 mm — D: 460 mm | H: 340 mm | Burner length: 800 mm
- 1100 mm — D: 460 mm | H: 340 mm | Burner length: 1000 mm
- 1300 mm — D: 460 mm | H: 340 mm | Burner length: 1200 mm
- 1600 mm — D: 460 mm | H: 340 mm | Burner length: 1500 mm
- 1800 mm — D: 460 mm | H: 340 mm | Burner length: 1500 mm
- 2200 mm — D: 460 mm | H: 340 mm | Burner length: 2000 mm
- 2700 mm — D: 460 mm | H: 340 mm | Burner length: 2500 mm
Dimensions — Hidden Installation
- 800 mm — D: 400 mm | H: 350 mm
- 900 mm — D: 400 mm | H: 350 mm
- 1100 mm — D: 400 mm | H: 350 mm
- 1300 mm — D: 400 mm | H: 350 mm
- 1600 mm — D: 400 mm | H: 350 mm
- 1800 mm — D: 400 mm | H: 350 mm
- 2200 mm — D: 400 mm | H: 350 mm
- 2700 mm — D: 400 mm | H: 350 mm
Materials & Installation
- Material: Steel
- Insulation: Fully insulated — suitable for combustible surrounds
- Colour / Finish: Matte black
- Installation type: Built-in / recessed
- Installation variants: Standard (with front frame) or Hidden (flush)
- Power required: Yes (for burner — see burner product page)
- Chimney required: No
Optional Extras
- Installation type: Standard (with front frame) or Hidden (flush, no frame)
- Reflection screen: Optional
- Long glass border: Optional
- Short glass border: Optional
- Canopy: Optional
- Flame decorations: Optional
Specifications vary by size and configuration. Contact us for a full specification sheet for your chosen size.