As can be deduced by the name, they are used in toilet doors. They have no locks or barrels. They operate like the balcony doors. It is possible to lock them only from the inner side. A latch functions as a lock. They can be opened from both sides by means of a handle. Pushing the sash by means of the handle, it is ensured that it settles in the frame. The locking action takes place by turning the lock latch by 90°. It thus becomes unable to be opened from outside. Furthermore, a warning message appears on the outer side in the window beneath the handle indicating that it is full-empty or symbolizing it with colors. To open the door, it is necessary to turn the latch in reverse direction to release it from the pawl, then pull the sash by turning the handle.