Now let’s talk about which door to choose. In the event that you are going to install it in an apartment building, then such a parameter as the confrontation of the rough physical strength of the door should not be in the first place. When hacking with the help of, for example, a sledgehammer, a loud noise will be published, which will inevitably attract the attention of the neighbors. The next door parameter will require much more attention — the confrontation of intellectual hacking, for which it is necessary to purchase and install complex and reliable locks. It is most effective to install two locks of different types and classes. Do not save on this.