
Airtight Performance
Level 8
q1=0.3 m³ / (m.h)
q2=0.5 m³/ ( ㎡.h )

Wind Pressure resistance
Level 9
p3=5.0 Kpa

Watertight Performance
Level 6
△P=700 pa

Insulation Performance
K=1.5~ 2.0W/(㎡.K)
There is a large area of the aluminum frame, so it’s very firm. A casement door doesn’t take up too much space because it can be entirely open if you need it. If you want to access to balcony, garden, or backyard easily, it’s a good choice.