Grade 6 according to EN 1143-1 represents the highest certified resistance level accessible on the market for a limited number of very specific applications. Grade 6 safes provide resistance for an extreme risk profile, against exceptionally severe attacks carried out by international specialists using the most powerful tools available. Intended for applications where the value or sensitivity of the contents demands an exceptional level of security.
Grade 6 safes are tested and approved according to the European standard EN 1143-1, in which specialised test laboratories attempt to force the safe open using a variety of attack methods — mechanical tools (such as hand tools and crowbars), power tools (such as hammer drills and angle grinders) and thermal tools (cutting torches, thermal lance). These tests are carried out under strictly controlled conditions by independent bodies such as ECB·S.
Under EN 1143-1, burglary resistance is expressed in Resistance Units (RU). For a Grade 6 safe, the resistance level is 270 RU for partial access and 400 RU for full access. Partial access refers to the creation of a limited opening through which a hand can be inserted, while full access implies complete access to the contents, for example by opening the door or creating a larger opening.