Guillotine glass is a type of window or door system that uses a sliding mechanism to open and close. The system consists of a panel of glass that is mounted on a track and can be moved up and down or side to side to open or close the window or door.

Guillotine glass is often used in commercial and industrial settings, such as warehouses or factories, to provide ventilation or access to outdoor areas. It can also be used in residential settings, such as homes or apartments, to provide a clear view of the outdoors and allow for natural light to enter the space.

One advantage of guillotine glass is that it allows for large openings to be created, which can be beneficial in spaces where a traditional hinged door or window would not be practical. It can also be more energy-efficient than traditional doors and windows, as it creates a tight seal when closed and can help to reduce drafts and heat loss.

Overall, guillotine glass is a versatile and efficient way to provide access and ventilation in a variety of settings, and can be easily opened and closed using the sliding mechanism.