The blinding function or external light regulation, as privacy protection can be achieved by different kinds of fixtures, for which the choice depends on the architectural style, from the historic and urban contest where building is located, as well as by the contribution to the energy savings and the security that is expected. The range of proposals is articulated through a wide number of types, materials, combinations and colors, the horizontal slats can be open, closed, or adjustable. Each type can be customized to be used for renovation or new construction. The operating devices can be manual or electric, they can be chosen from a wide variety of proposed and matching accessories. The shutters being particularly exposed to the weather, the quality of the materials used and their treatments have been studied and designed to allow a long life in an efficient and good aesthetic conditions.