Security grilles with perimeter frame available in different models to provide the opening that suits all the needs. Made with galvanized steel profiles, provided with locks, 3 or more locking points, with 1/2 cylinder yale facing the inside of the room. Painting is made with thermosetting powders for external. The grilles can be equipped with a special joint at 180 °, that allows a total opening both to the outside and the inside.