
The RAIS Visio 3 Three Sided Large Inset Wood Burning Fire is a substantial built-in fireplace designed around an exceptionally wide, three-sided view of the flames. As the larger model within the Visio range, the Visio 3 L combines extra-large glass panels with minimal framing to create an architectural fireplace that approaches the visual openness of a traditional open fire while retaining the control of a modern closed wood burner.
Glass extends across the front and both sides of the combustion chamber, allowing the fire to be enjoyed from several positions within the room. This makes the Visio 3 L particularly effective within a projecting chimney breast, feature wall or large room-divider installation where a conventional front-facing insert would restrict the view.
The scale of the glazing is central to the design. A discreet black or stainless-steel frame sits around the glass without distracting from the flames, helping the appliance integrate naturally into the surrounding architecture.
Access to the combustion chamber is through a vertical sliding glass door. The pane is pushed upwards to open, avoiding the need for a hinged door projecting into the room and maintaining the clean appearance of the fireplace when in use.
RAIS also offers a choice of handle finishes in stainless steel, black or wood, allowing a subtle level of customisation to suit the surrounding interior.
With a supplied rated heat output of 10.3kW and an operating range of approximately 8–12kW, the Visio 3 L is designed for considerably larger spaces than many conventional inset wood burners. The supplied technical information lists an 81% efficiency and A+ energy efficiency class.
The appliance incorporates the RAIS Advanced Glass Concept®, which uses the design of the combustion chamber and glazing to create favourable conditions for maintaining a clearer view of the fire during normal operation.
Its generous 200mm flue outlet and substantial overall construction reinforce the fact that the Visio 3 L is intended as a major architectural fireplace rather than a compact stove insert.
For projects requiring an impressive panoramic real flame with significant physical presence, the RAIS Visio 3 Large Three Sided Inset Wood Burning Fire provides one of the most expansive configurations within the Visio range.
Key Features
- Large three-sided inset wood burning fire
- RAIS Visio 3 L design
- Extra-large glass panels
- Front and two side flame views
- Minimal visible framing
- Open-fire-inspired appearance
- Black or stainless-steel frame
- Vertical sliding glass door
- Upward-opening access
- Stainless steel, black or wood handle options
- Rated output of 10.3kW
- Output range of approximately 8–12kW
- 81% efficiency
- A+ energy efficiency class
- 200mm flue outlet
- RAIS Advanced Glass Concept®
- Suitable for large architectural installations
- Optional heat accumulation capability
Expert Insight
The Visio 3 L is primarily distinguished from the standard Visio 3 by scale. Its larger glazed area and wider combustion chamber create a much more panoramic fire view, making it particularly effective where the fireplace needs to hold its own within a large room or substantial chimney structure. The three-sided glazing also means the installation should be designed around how the fire will be viewed from different positions, rather than simply treating it as a conventional front-facing insert.
Suitability
The RAIS Visio 3 Three Sided Large Inset Wood Burning Fire is particularly suited to large open-plan living areas, contemporary extensions, substantial chimney breasts, luxury residential projects and architectural room dividers where a large real wood fire is intended to become a principal feature of the interior.
Installation / Technical Notes
Key supplied technical data:
- Product: RAIS Visio 3 L Wood
- Appliance type: Large three-sided inset wood burning fire
- Rated output: 10.3kW
- Output range: 8–12kW
- Efficiency: 81%
- Energy efficiency class: A+
- External dimensions: 1089mm W x 634mm D x 1765mm H
- Combustion chamber dimensions: 660mm W x 256mm D x 545mm H
- Installation dimensions: 1088mm W x 504mm D x 504mm H
- Outer frame dimensions: 1088.6mm W x 504mm D x 563mm H
- Flue outlet diameter: 200mm
- Particulates: 1g/kg
- Additional heat accumulation stones: 70kg according to the supplied RAIS technical table
- Manufacturer Clearances
- To side wall: 100mm
- To back wall: 100mm
- To ceiling: 1362mm
- To floor: 375mm
- To furniture: 1100mm
The current RAIS product information supplied here shows the physical dimensions and clearances, while the detailed technical specification supplied alongside it gives the 10.3kW rated output, 8–12kW range and 81% efficiency. These should be checked against the current UK data sheet for the exact appliance being ordered before final publication or installation.
The quoted 120–180m² heating area is based on the conditions used in the supplied technical specification and should not be treated as a substitute for a property-specific heat-loss calculation.
Final recess construction, structural support, hearth specification, combustion air requirements, chimney/flue design and combustible clearances should be confirmed from the current RAIS installation manual and technical drawing.

















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