COR 80 Hidden Sash
Elegant straight-line design in which the sash is concealed behind the frame, thus maximizing the glazed surface and natural light entry. This design offers excellent thermal and acoustic performance thanks to the 45 mm thermal break and glazing capacity up to 51 mm, allowing the installation of triple glazing.
Features
- Thermal transmittance: Uw ≥ 0.71 (W/m²K)
- Acoustic insulation: Rw up to 46 dB
- Air permeability: Class 4
- Water tightness: Class 1650
- Wind resistance: Class C5
