Class 3 – It is the capacity to resist to burglar attempts and it is measured through the stress with static and dynamic loads and the simulation of burglar attempts, carried out with manual tools such as crowbar, screwdrivers, pliers, etc for a maximum test duration of 20 minutes.
Class 4 – It is the capacity to resist to burglar attempts and it is measured through the stress with static and dynamic loads and the simulation of burglar attempts, carried out with manual and electrical tools such as hammer, chisel, hatchet, shears, electric drill, etc for a maximum test duration of 30 minutes (class 4 quadruples class 3 safety).