The Element 4 Sky Large Tunnel Bio is a striking tunnel-style built-in bioethanol fireplace designed to connect two adjoining spaces with a continuous, see-through flame. Its wide format and clean black steel finish make it an ideal architectural feature for open-plan homes and commercial interiors seeking maximum visual impact.

Powered by a high-performance bioethanol double burner, the Sky Large 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, eliminating the need for a chimney or flue and allowing complete freedom in placement and design.
Supplied with a remote control as standard, the Sky Large 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 functional requirements. Technical drawings and installation manuals are available to support smooth planning.
Features & Benefits
- Large tunnel-style 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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