The Stûv 6-in 66×50 Wood Burning Insert is a medium-width built-in wood fire designed to combine a broad flame picture with efficient heating and flexible installation options. It is wider than the 56×50 but keeps a lower height profile, making it a good option where width matters more than vertical scale.
As part of the Stûv 6-in range, it uses the same curved chamber design that helps create a wide fire view and efficient natural airflow. The insert is made from steel and cast iron and supports natural or fan-assisted convection, giving more installation flexibility than the smallest models. Ducted convection is also possible as an option, which makes it better suited to projects where warm air management is part of the design.
In performance terms, the 66×50 delivers a 7.0 kW nominal output, with an output range of 5 to 9 kW, 77% efficiency and an energy efficiency class of A. It accepts 40 cm logs in a horizontal position, weighs 75 kg, and uses a 150 mm flue outlet, 150 mm hot air outlets and a 100 mm outside air inlet.
Key Features:
- Medium-width wood burning insert
- Built-in cassette format
- Wide flame view
- Steel and cast iron construction
- Natural or fan-assisted convection
- Optional ducted convection
- Optional direct external air inlet
- Oblique or vertical smoke outlet
- 7.0 kW nominal output
- Output range 5 to 9 kW
- 77% efficiency
- Energy efficiency class A
- Accepts 40 cm logs
- Optional finishing frames
- Installation box concept
Stûv 6-in Frame Options:
The Stûv 6-in inset wood burning fire is available with four frame styles to suit different fireplace designs and installation requirements. Options include a flush-mounted slim frame, thin flush frame, 4-sided applied frame, and 3-sided applied frame, allowing a neat and tailored finish around your Stûv 6-in wood burning insert.
Expert Insight
The 66×50 is a good choice where a wider fire view is preferred but the project benefits from a lower-height insert. That can make it useful in more horizontal fireplace compositions or contemporary openings where a squat, broad fire looks more balanced than a taller model.
It is also one of the lighter medium-sized options in the range, which may help in some retrofit situations.
Suitability
The Stûv 6-in 66×50 Wood Burning Insert is well suited to modern fireplace openings, wider inset layouts and interiors where a broader, lower fire view is preferred.
Installation / Technical Notes
This model weighs 75 kg, accepts 40 cm logs, uses a 150 mm flue outlet, 150 mm hot air outlets, and a 100 mm outside air inlet. Minimum insulation thickness is 9 cm at the back, 8 cm at the sides, 11 cm above and 5 cm below.
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