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System Young-line 1.7
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- Air permeability class 4 - DIN EN 12207
- Watertightness class 9A - DIN EN 12208
- Concealed sash on the outside - so more glass and less frame
- Elegant, narrow sash view on the inside
- High sash stability thanks to circumferential adhesion with high-valued tested adhesive tapes between glass and frame
- Very good thermal insulation values thanks to large, more-walled thermal dividing profiles
- Frame's insulation value Uf = 1.7 W/m²K
- Triple circumferential rabbet seal
- Generally total-glass-thickness of 30 mm
- Easy maintenance thanks to light frame-rate and high self-purifying effect
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