On a diebold vault door is says smna class 4 hour spec f-3 y32213 what does this mean?

The inscription on the Diebold vault door indicates that it is a "Class 4" security vault, which signifies a certain level of resistance to unauthorized access, typically suitable for high-value assets. The "hour spec" likely refers to the time rating of the door, indicating it can withstand a specific amount of time against attacks. The "F-3" might denote a specific model or feature set, while "y32213" could be a unique serial number or manufacturing code for identification and tracking purposes.