Works on a locked door in an apartment or home. The hanger slips in to the crack above the door and secures nicely. If you need quick access to the door in case of an emergency, hanger will come right down.

Please check the size of the crack in your door to make sure it is not too big or small for this model. This should be able to range anywhere from 3 - 6mm crack. I attached a step file if you need to adjust the model.