Abstract: Fine perforated shield (1) for automobiles having the same dimension as the window and being supported by a reinforcing frame (2). This shield should provide aeration to the automobiles to prevent suffocation, asphyxia or even death of the remaining passengers when the driver is forced to stop the motor for taking a break or sleeping for refreshment during long travels. It also should protect against mosquitos, reptiles, snakes etc. and especially against robbers and thieves. The arrangement is placed to the inside position of the glass window and includes additional nm channels and seals. It is resistant to cutting, scratching and burning and can be controlled manually or electrically with a window regulator having a locking button.