Tempered glass doors are increasingly used in all types of construction. It is the type of glass that meets the requirements of new architectural concepts that seek energy efficiency, comfort, aesthetics and safety. The glass door allows the passage of light between spaces, totally or partially. Used with the most diverse glass hardware, including sliding systems, they allow for various types of closure and aesthetics, both for exterior and interior. Increasingly to provide comfort are also used in automatic doors, suitable and customized to the places where they are intended to be installed, whether elevators or entrances to buildings.