The character
Choose species, glazing bars and details for the building. Heritage requirements are assessed per project.
BO Fenster · Biel/Bienne
Timber windows
The character of timber, tailored to your building.
Timber, profile and finish
68, 78 or 88 mm
Compare profile depth and available glazing. Thermal figures always need their reference configuration.
Finish and care
Paint or stain, colour and maintenance: plan these choices for the exposure conditions.
Compare systems
Pine or meranti, 68–88 mm profiles and painted or stained finishes. Compare SOFTLINE systems for renovation or new construction.
3 / 3 systems
Timber windows
SOFTLINE 68
Timber
- Profile depth
- 68 mm
- Glazing thickness
- 24–32 mm
- Seals
- 2
Figures depend on configuration. Conditions on the detail page.
Explore this system
Timber windows
SOFTLINE 78
Timber
- Profile depth
- 78 mm
- Glazing thickness
- 24–44 mm
- Seals
- 2
Figures depend on configuration. Conditions on the detail page.
Explore this system
Timber windows
SOFTLINE 88
Timber
- Profile depth
- 88 mm
- Glazing thickness
- 32–54 mm
- Seals
- 2
Figures depend on configuration. Conditions on the detail page.
Explore this systemShapes and finishes
Choose timber species, colour and decorative details together. For protected buildings, profiles and installation must be assessed against the project requirements.
See our heritage projectSOFTLINE · 2026
Timber · SOFTLINE
The natural character of timber, with or without exterior aluminium cladding. Explore the six SOFTLINE and DUOLINE systems in our 2026 brochure for renovation and new construction.
Download the brochurePDF · 14 pages · French
Compare profiles and glazing
SOFTLINE 68Show specifications
- Material
- Timber
- Timber frame (mm)
- 68
- Total depth (mm)
- 68
- Seals
- 2
- Glazing (mm)
- 24–32
- Uw / Ug (W/m²K)
- 1,27 / 1,1
SOFTLINE 78Show specifications
- Material
- Timber
- Timber frame (mm)
- 78
- Total depth (mm)
- 78
- Seals
- 2
- Glazing (mm)
- 24–44
- Uw / Ug (W/m²K)
- 0,90 / 0,6
SOFTLINE 88Show specifications
- Material
- Timber
- Timber frame (mm)
- 88
- Total depth (mm)
- 88
- Seals
- 2
- Glazing (mm)
- 32–54
- Uw / Ug (W/m²K)
- 0,76 / 0,5
| System | Material | Timber frame (mm) | Total depth (mm) | Seals | Glazing (mm) | Uw / Ug (W/m²K) |
|---|---|---|---|---|---|---|
| SOFTLINE 68 | Timber | 68 | 68 | 2 | 24–32 | 1,27 / 1,1 |
| SOFTLINE 78 | Timber | 78 | 78 | 2 | 24–44 | 0,90 / 0,6 |
| SOFTLINE 88 | Timber | 88 | 88 | 2 | 32–54 | 0,76 / 0,5 |
Source: BO Fenster 2026 brochure, pp. 3–8 and 13. Uw refers to the window, Ug to the glazing. Uw values are calculated with a thermally insulating Swisspacer spacer. Actual performance depends on dimensions, glazing and options; final specifications are provided in your quotation. DUOLINE total depths include 14 mm of aluminium cladding; seal counts follow the brochure comparison table.
SOFTLINE · the character of timber
68, 78 or 88 mm profiles in laminated pine or meranti. Custom shapes and decorative elements can suit the building, including heritage projects subject to their requirements. An aluminium profile protects the bottom of the sash.
DUOLINE · timber inside, aluminium outside
The 68, 78 or 88 mm timber profiles have an additional 14 mm aluminium cladding. Total installation depths are therefore 82, 92 or 102 mm. Exterior finishes can be selected from the RAL colour range.
Timber species & finishes
Pine and meranti with four protective coats. Opaque paints or stains that reveal the grain, including white, light oak, walnut, teak, graphite and olive green. Colours vary by timber species; confirm your selection with a sample.
Hardware & glazing
MACO MULTI-MATIC hardware with two security keeps, micro-ventilation on tilt-turn sashes and aluminium handles. Decorative or functional glazing and Swisspacer Ultimate spacers depending on configuration. Optional handles with keys or safety buttons.
Timber finishes
View data sheet · PDF (FR)Timber windows
A proposal suited to your building
Share your dimensions, photos and priorities. We will clarify the configuration and installation with you.