What does the door instructions specify?

I am asking what size steel (safe room) door and opening size has been used by others.

If I knew exactly what door I was using, I obviously would know the opening size.

is this a room to run to when burglars come (like that Jodie Foster movie) or a room to store valuables....the difference being one is large and one is small. If small, I would think a small door would suffice, depending on what you are putting in there.

I thought a "safe rooom" was for hurricane/tornado protection as per FEMA's definition.

I grew up when prepareadness meant hide-under-your desk if the Commies drop an A bomb on you. But this actually sounds like a good idea.