The system is optimized in the proportion of highest structural stability while using lowest amount of aluminium

Profiles are reinforced at load bearing points

Test for sound insulation – 20 mm glazing /4+12+4 mm/, Rw = 34 dB

Test for sound insulation – 22 mm glazing /6+12+4 mm/, Rw = 37 dB

Test for sound insulation – 43 mm glazing //6+4/+24+/4+4/, Rw = 41 dB