Thermal insulation – Uf    1.2 W/m²K
Thermal insulation – Uw    0.81 W/m²K*
Air tightness    
Class 4 (600Pa)
Water tightness    
Class E900 (900Pa)
Wind load resistance    
Class C5 (2000Pa)
Acoustics – Rw(C;Ctr)    TUTI: 46(0;-3) dB DC: 44(-2;-4) dB
Opening & closing resistance    Class 3