Neverdark
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Neverdark TST Thermobox – See-Through
Neverdark TST Thermobox – See-Through
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Delivery & Returns
Delivery & Returns
Delivery
- Free UK Mainland delivery on orders over £500
- Large item delivery £29 ( normally £49 pallet delivery )
- In-stock UK items typically dispatch within 1–2 business days
- EU-stock items typically dispatch within 1–3 weeks
- Larger fireplaces and media wall units are delivered on a pallet with curbside delivery
- Tracking details provided once your order has been dispatch
Returns
- 14-day return request window from the date of delivery
- Items must be unused, uninstalled, and returned in original packaging
- Return shipping costs apply unless the item is faulty or incorrect
- Restocking and administration fees may apply
For full details, please refer to our Shipping Policy and Refund & Returns Policy.
The Neverdark TST is a see-through Thermobox for the Firetec and Automatic burners — open on both faces, so the flame is visible simultaneously from two sides. The most architecturally dramatic configuration, and the natural choice for a wall between two rooms.
Fully insulated to Neverdark's specification — installs directly into combustible surrounds including timber framing and MDF, and can be positioned directly beneath a television without any heat clearance concerns. Available in standard installation (with a front frame covering the wall finish) and hidden installation (fully flush, no frame).
Available from 800 mm to 2,700 mm. Made to order, 6–8 weeks. Contact us to discuss your project.
The TST is the see-through Thermobox for the Firetec and Automatic burners — open on both the front and rear faces, with the flame visible simultaneously from two sides. The most architecturally distinctive configuration in the range, and the natural choice for a wall intended to serve two spaces.
The See-Through Configuration
Unlike the TRD, which is designed for a partition wall shared between two defined spaces, the TST is typically used where the see-through quality itself is the design intention — a wall of glass, a low dividing element, or a feature that is meant to be looked through as much as looked at. Both faces of the installation are open, and the flame is equally visible from either side. Short glass borders are available; a long glass border is not available on this configuration.
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
Hidden installation is particularly well-suited to the TST — with no front frame on either face and the top-opening controls entirely out of sight, the installation can read as a pure flame element with no visible hardware on either side. Standard installation adds a front frame on the viewing face. 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: Not available on TST
- Short glass border: Optional
- Canopy: Optional
- Flame decorations: Optional
Long glass border not available on TST.
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
- 1,100 mm — D: 460 mm | H: 340 mm | Burner length: 1,000 mm
- 1,300 mm — D: 460 mm | H: 340 mm | Burner length: 1,200 mm
- 1,600 mm — D: 460 mm | H: 340 mm | Burner length: 1,500 mm
- 1,800 mm — D: 460 mm | H: 340 mm | Burner length: 1,500 mm
- 2,200 mm — D: 460 mm | H: 340 mm | Burner length: 2,000 mm
- 2,700 mm — D: 460 mm | H: 340 mm | Burner length: 2,500 mm
Dimensions — Hidden Installation
- 800 mm — D: 400 mm | H: 350 mm
- 900 mm — D: 400 mm | H: 350 mm
- 1,100 mm — D: 400 mm | H: 350 mm
- 1,300 mm — D: 400 mm | H: 350 mm
- 1,600 mm — D: 400 mm | H: 350 mm
- 1,800 mm — D: 400 mm | H: 350 mm
- 2,200 mm — D: 400 mm | H: 350 mm
- 2,700 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: Not available on TST
- Short glass border: Optional
- Canopy: Optional
- Flame decorations: Optional
Long glass border not available on TST.
Specifications vary by size and configuration. Contact us for a full specification sheet for your chosen size.
The TST is the see-through Thermobox for the Firetec and Automatic burners — open on both the front and rear faces, with the flame visible simultaneously from two sides. The most architecturally distinctive configuration in the range, and the natural choice for a wall intended to serve two spaces.
The See-Through Configuration
Unlike the TRD, which is designed for a partition wall shared between two defined spaces, the TST is typically used where the see-through quality itself is the design intention — a wall of glass, a low dividing element, or a feature that is meant to be looked through as much as looked at. Both faces of the installation are open, and the flame is equally visible from either side. Short glass borders are available; a long glass border is not available on this configuration.
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
Hidden installation is particularly well-suited to the TST — with no front frame on either face and the top-opening controls entirely out of sight, the installation can read as a pure flame element with no visible hardware on either side. Standard installation adds a front frame on the viewing face. 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: Not available on TST
- Short glass border: Optional
- Canopy: Optional
- Flame decorations: Optional
Long glass border not available on TST.
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
- 1,100 mm — D: 460 mm | H: 340 mm | Burner length: 1,000 mm
- 1,300 mm — D: 460 mm | H: 340 mm | Burner length: 1,200 mm
- 1,600 mm — D: 460 mm | H: 340 mm | Burner length: 1,500 mm
- 1,800 mm — D: 460 mm | H: 340 mm | Burner length: 1,500 mm
- 2,200 mm — D: 460 mm | H: 340 mm | Burner length: 2,000 mm
- 2,700 mm — D: 460 mm | H: 340 mm | Burner length: 2,500 mm
Dimensions — Hidden Installation
- 800 mm — D: 400 mm | H: 350 mm
- 900 mm — D: 400 mm | H: 350 mm
- 1,100 mm — D: 400 mm | H: 350 mm
- 1,300 mm — D: 400 mm | H: 350 mm
- 1,600 mm — D: 400 mm | H: 350 mm
- 1,800 mm — D: 400 mm | H: 350 mm
- 2,200 mm — D: 400 mm | H: 350 mm
- 2,700 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: Not available on TST
- Short glass border: Optional
- Canopy: Optional
- Flame decorations: Optional
Long glass border not available on TST.
Specifications vary by size and configuration. Contact us for a full specification sheet for your chosen size.