Push bars are horizontal bars installed on doors that allow users to open them easily by pushing against the bar. They are commonly found in commercial buildings, such as restaurants, hospitals, and schools, where quick and safe exits are essential. Push bars are designed to meet safety regulations, ensuring that doors can be opened swiftly in emergencies. These devices are often part of a panic hardware system, which includes additional features like latches and locks. Push bars can be made from various materials, including metal and plastic, and are available in different sizes to fit various door types.