Exterior louvered shutter and interior solid shutter 
This window, comprising exterior louvered shutters and solid interior shutters, allows complete control of light and visual privacy to suit any time of day.
The exterior folding-sliding protection consists of four louvered shutters, filtering the light inside and preventing direct entry of sunrays. Meanwhile, the inner shutter, in two leaves, allows the darkening of space.
When closed, the light colour of the outside side of the solid shutter increases the reflection of the solar rays which enter into the space between it and the glass and prevents the formation of greenhouse effect. When open, this facilitates light reflection inwards.