The Element 4 Sky Medium Tunnel Bio is a contemporary tunnel-style built-in bioethanol fireplace designed to create a striking see-through feature between adjoining spaces. Its balanced proportions make it ideal for open-plan layouts, allowing the flame to be enjoyed from both sides while maintaining a clean, architectural aesthetic.

Equipped with a high-performance bioethanol double burner, the Sky Medium Tunnel Bio delivers an adjustable heat output of 5–7 kW with 100% efficiency. The clean-burning bioethanol fuel produces real flames without smoke, soot, or ash, removing the need for a chimney or flue and offering complete freedom in installation and design.
Supplied with a remote control as standard, the Sky Medium Tunnel Bio can be customised with a wide range of optional accessories. Anti-reflective glass, black reflective rear panels, LED bottom lighting, convection grills, an access door, and the Invisimesh safety screen allow the fireplace to be tailored to both aesthetic and practical requirements. Technical drawings and installation manuals are available to support seamless planning.
Features & Benefits
- Tunnel-style see-through bioethanol fire
- Bioethanol double burner
- 5–7 kW heat output
- 100% efficient clean burning
- Black steel finish as standard
- Real flames without chimney
- Remote control included
- Optional safety and lighting upgrades
Specification:
| Type of fireplace: | Bio-Ethanol fires |
|---|---|
| Net natural Bio Ethanol capacity (min-max): | 5-7 kW |
| Efficiency: | 100% |
| Black steel: | (Standard) |
| Black reflective panels: | (Optional) |
| Remote control: | (standard) |
| Anti-reflective glass: | (optional) |
| Access door: | (optional) |
| Convection grills built-in and surface-mounted: | (optional) |
| LED bottom lighting: | (optional) |
| Safety screen Invisimesh: | (optional) |

















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