Wind resistance: Wind resistance better than 360 kgf/m2.
Air-tightness: Ventilation volume less than 2 m3/hr.m2.
Water-tightness: Water-tightness exceeds 75 kgf/m2. (Highest national standard is 50 kgf/m2).
Sound insulation: Class TS-35, STC = 37dB. (Test window uses 5 + 10 + 5mm laminated glass)