1.Termal insulation, excellent ventilation and natural circulation: Open structure can be within 90 degree and can be made into hanging function.

2.High and safety anti-theft performance: Through the linkage hardware and handle, fixed to the window frame, while be closed.

3.Easy to be cleaned the outer glass: Panel from outside turned to inside through simple operations of Linkage handle.

4.Through the multi-points locking aroud window to improve the effect of sealing and thermal insulation.

Frame and panel will be packed separately.

Frame: Bundle with EPE foam and then bundle with protect film again;

Panel: 4 sides covered with EPE foam, and then 1 panel into 1 shrink bag.