The technical and aesthetic contents of K80 series satisfy the best relationship between the functionality and the aesthetics. Its design is simple and intuitive, its primary target is maximum aesthetic versatility, able to be always topical and to adapt itself to all the styles. It is particularly suitable to the restoration of the old houses, in order to substitute the ones in wood, without betraying their history. The available models for K80 series are the fixed open, the adjustable with rounded surmount slat and with large gliding slat as the traditional, as well the typologies as the armoured fixed open and the armoured adjustable.