Anyone have a fireproof box for documents only?

I am looking to purchase a small one that is both fireproof and waterproof. I found one I like but the description reads:
UL classified 1 hour proven fire protection.

Does that mean it's only protected for an hour in a fire? Does that help? Can anyone make any suggestions?

TIA!

I do -

the one I have says the same thing - 1 hr.

Yes, i think that means it's OK for 1 hr in a fire. After 1 hr, it'll start to melt.