DUOLINE 88
Timber-aluminium

Data from the BO Fenster 2026 brochure. Uw refers to the complete window, Ug to the glazing. Calculated values depend on dimensions, glazing and options. Final specifications are provided in the quotation. Uw values calculated with a thermally insulating Swisspacer spacer.
88 mm
Profile depth
32–58 mm
Glazing thickness
4
Seals
Timber-aluminium window with a 88 mm timber frame and 14 mm exterior cladding. Total depth 102 mm, with pine or meranti inside and a RAL exterior finish.
This system is part of the solutions used by BO Fenster. The final choice always depends on measurements, the building, performance goals and installation type.
Colors and finishes
Finishes
- Opaque paint or stain
- Four protective coats
- Confirm colours using samples
Technical specifications and documentation
Detailed technical parameters
- Total depth with aluminium
- 102 mm
- Reference Uw / Ug
- 0,79 / 0,5 W/m²K
- Timber species
- Laminated pine or meranti
- Hardware
- MACO MULTI-MATIC
Data from the BO Fenster 2026 brochure. Uw refers to the complete window, Ug to the glazing. Calculated values depend on dimensions, glazing and options. Final specifications are provided in the quotation. Uw values calculated with a thermally insulating Swisspacer spacer.
Technical drawings
Other systems we use
Compare the same dimensions and glazing. Performance depends on configuration; figures from different systems are not always directly comparable.

Timber-aluminium windows
DUOLINE 68
Timber-aluminium
- Profile depth
- 68 mm
- Glazing thickness
- 24–44 mm
- Seals
- 4
Figures depend on configuration. Conditions on the detail page.
Explore this system
Timber-aluminium windows
DUOLINE 78
Timber-aluminium
- Profile depth
- 78 mm
- Glazing thickness
- 24–50 mm
- Seals
- 4
Figures depend on configuration. Conditions on the detail page.
Explore this systemCould this system fit your project?
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