
COR 80 Hidden Sash
Elegant straight-line design in which the sash is concealed behind the frame, maximising the glazed surface and the entry of light. This is combined with high thermal and acoustic performance driven by a 45 mm thermal break and a glazing capacity of up to 51 mm, allowing the installation of triple glazing.
80 mm aluminium hinged system with concealed sash
COR 80 Hidden Sash combines minimalist aesthetics with high insulation performance. The sash is hidden behind the frame to reduce the visible section, increase natural daylight and offer a very clean solution for demanding residential projects.
- Thermal transmittance
- Uw ≥ 0.71 W/m²K
- Acoustic insulation
- Rw up to 46 dB
- Air permeability
- Class 4
- Water tightness
- Class E1650
- Wind resistance
- Class C5
System technical information
Main data
- Sections
- Frame 80 mm · Sash 80 mm
- Polyamide strip length
- 45 mm
- Profile thickness
- Window 1.9 mm
- Glazing
- Max. 51 mm · Min. 36 mm
- Max. sash dimensions
- Standard solution: width 1300 mm · height 2400 mm · HD hardware for side-hung opening: width 1200 mm · height 3500 mm
- Max. sash weight
- 160 kg
- Note
- Check maximum weight and dimensions according to typology
Options
Opening options

System gallery
Images prepared to show the concealed-sash aesthetics, the system sections, its opening options and its integration into residential projects.




Compare this system with what you need to improve
Before choosing a window, it helps to relate the system to the real use of the home: thermal insulation, outside noise, air leakage, watertightness, orientation and opening type.
Connect this system with your project
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Would you like to assess COR 80 Hidden Sash for your home?
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