The Stûv 22/90 DF Double Sided Inset Wood Burning Fire is a double-sided built-in fireplace designed to make the flames visible through two opposing glass faces, allowing the fire to connect two spaces while still acting as a clear architectural divider. With retractable glass on both sides, a strong nominal output and clean integrated detailing, it is built for projects that want both transparency and serious heating performance.
What sets this model apart is the way it combines openness with control. In closed-fire mode, the glass stays lowered and the fireplace delivers efficient, controlled heating while preserving a clear through-view of the fire from both sides. In open-fire mode, the retractable glass creates a more immediate fireside experience, but the technical design is intended to avoid the usual drawbacks of a traditional open fireplace. The supplied information explains that combustion air is drawn from outside the building, either from below or at the rear, and that the system uses compensation air so the fire does not throw internal ventilation off balance. The result is a fireplace that can separate two zones visually without making them feel closed off.
The Stûv 22/90 DF is also designed to be easy to integrate and maintain. It is described as having pure lines, even in the smallest details, and the door can swing forward to make cleaning the inner face of the glass easier. That is especially useful on a double-sided model, where the visual quality of both glass faces matters. Optional extras include a barbecue kit, façade, log rack, front insulation kit and multiple ready-to-fit fireplace and cladding options, including DF1, DF2 and DF7 configurations.
In performance terms, this model provides a 17 kW nominal output, with a usage range of 7 to 19 kW, 80% efficiency and an energy efficiency class of A+. It accepts 50 cm horizontal logs, uses a 250 mm smoke flue, and supports direct external air inlet, primary and secondary air control, post-combustion and high airtightness. This gives it the heating capability expected from a substantial double-sided inset fireplace, while still being engineered for controlled combustion and architectural integration.
Key Features:
- Double-sided inset wood burning fireplace
- Retractable glass on both sides
- Through-view fire between two spaces
- 17 kW nominal output
- Usage range from 7 to 19 kW
- 80% efficiency
- Energy efficiency class A+
- Accepts logs up to 50 cm
- Direct external air inlet
- Compensation air system
- High airtightness
- Primary and secondary air control
- Post-combustion system
- 250 mm smoke flue
- Door swings forward for glass cleaning
- Optional air-funnelling solutions
- Optional barbecue kit
- Optional façade and ready-to-fit cladding options
Expert Insight
The real advantage of the 22/90 DF is that it gives you a true double-sided architectural fireplace without losing control over combustion and room air balance. That is particularly important in open-plan homes, where a see-through fire can define two areas without blocking light or sightlines, but still needs to behave like a high-performance appliance rather than a decorative opening.
The forward-swinging door is also a practical detail worth noting. On a double-sided unit, internal glass access matters more because both faces need to stay visually clean. That makes maintenance easier and helps preserve the transparent effect that is central to this model.
Suitability
The Stûv 22/90 DF Double Sided Inset Wood Burning Fire is well suited to open-plan interiors, room-dividing fireplace projects, design-led renovations and homes where the fireplace should connect two adjoining spaces while maintaining a clean architectural look. It is a strong choice for customers who want a substantial double-sided built-in fire without stepping up to the largest width in the range.
Installation / Technical Notes
This model weighs 296 kg and uses a 250 mm smoke flue, 150 mm hot air outlets and a 100/160 mm outside air inlet. It has a minimum draw of 12 Pa, smoke mass flow of 14.6 g/s, and average smoke temperature of 283°C. Minimum insulation thickness between the stove and combustible materials is listed as no rear value stated, 8 cm at the sides, 14 cm above and 0 cm below. Optional ready-to-fit fireplace configurations listed for the double-sided range include DF1, DF2 and DF7.
Frames, Claddings And Front Panel Examples
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