The Element4 Sky Medium Tunnel is a double sided gas fireplace designed to create a seamless visual link between two rooms, offering a clear view straight through the flame bed. Its tunnel style construction makes it ideal for dividing spaces without blocking light or sightlines, while the Real Flame Burner and true-to-nature cleaved wood logs deliver a rich, authentic fire effect. With an 89% efficiency rating and adjustable output levels for natural gas (G20/G25) and propane (G31), it provides steady warmth for medium sized interiors while maintaining energy conscious performance.
Thanks to its minimal installation depth, the Sky Medium Tunnel can be positioned in narrow or design sensitive locations, allowing architects and designers greater flexibility. For homes with complex flue layouts, the optional Powerfan system supports longer or indirect routing. Anti reflective glass is available to enhance clarity on both viewing sides, and optional black reflective panels deepen the visual impact of the flames. Control options include a standard remote, the Element4 Puck controller, Wi-Fi app operation, or integration with home automation systems. Additional upgrades—such as LED bottom lighting, various convection grille designs, a wall switch, Invisimesh safety screen, and an access door—allow detailed customisation.
Built from durable black steel, the Sky Medium Tunnel is engineered for long term stability and a clean architectural look that complements contemporary interiors. Its see through design creates a striking architectural feature, delivering a warm and consistent flame picture even at low settings. Combining a distinctive tunnel layout, dependable performance, advanced burner technology, and flexible controls, the Sky Medium Tunnel is a standout double sided gas fireplace for modern residential and commercial environments.
Features and Benefits
- Double sided tunnel design – Clear flame visibility through both rooms.
- Real Flame Burner – Produces lifelike flames with natural cleaved logs.
- High efficiency (89%) – Strong, reliable heating with lower energy use.
- Adjustable heat output – Suitable for medium sized living and commercial spaces.
- Slim installation depth – Ideal for tight or architecturally sensitive areas.
- Optional Powerfan system – Supports extended or complex flue configurations.
- Stable low setting flames – Attractive flame presentation at reduced output.
- Dual clear view windows – Anti reflective glass available for improved clarity.
- Robust steel construction – Standard black steel for durability and clean styling.
- Versatile control options – Remote, Puck, Wi-Fi app, home automation, and wall switch.
Options Explained

- Black reflective panels – Intensify the flame effect by reflecting light back into the firebox for added depth and brightness.
- Anti-reflective glass – Minimises reflections so the flames remain clear from every angle in bright or open spaces.
- Operation via app (Wi-Fi kit) – Enables smartphone or tablet control, scheduling, and remote operation.
- Connect to home automation – Integrates the fireplace with smart home systems for centralised control.
- Puck controller – Compact wireless controller for fast, intuitive adjustments.
- Powerfan – Boosts flue performance, allowing installation even when the flue must travel long distances or take bends.
- Convection grills (built-in or surface-mounted) – Allow heat distribution through your chosen interior design approach.
- Wall switch – Simple, fixed position on/off and control interface.
- LED bottom lighting – Decorative base lighting that enhances the flame effect when the fire is on or off.
- Safety screen Invisimesh – Nearly invisible mesh screen providing safety while preserving the clean aesthetic.
- Access door – Allows easier servicing and maintenance without disturbing the installation.
Specification:
| Net natural gas capacity (min-max) G25: | 4,3 – 13,0 kW |
|---|---|
| Net natural gas capacity (min-max) G20: | 4,6 – 13,7 kW |
| Net propane capacity (min-max) G31: | 4,1 – 12,5 kW |
| Efficiency: | 89% |
| Venting ø (mm): | 130/200 |

















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