All armored doors have a different level of stability when hacking. It can be determined according to a special classifier. There are currently five resistance classes. If you rely on the standards, then the 5th grade will be hacking in about three hours, but the first one in forty minutes. Based on the named numbers, we can conclude that the armored doors should be installed both in residential premises and in offices, because their resistance is quite large. On sale you can find both 7, 6, 8 grades, which are installed with special need, for example, in banks or rooms where an increased degree of protection is needed.