I have two GOVT file cabinets,, one is a "2" high, the other is a "4" high.
The 2 high weighs 400 pounds, the 4 high weighs 800 pounds.
Last spring, i replaced the safe lock in the 4 high
the 2 high works perfectly.
Both are "legal size", I think that means the drawers are 14
inches wide.
Both are VERY deep, the drawers roll WAY out, they are deeper than a typical gun safe.
They are both rated 45 minute tamper resistant.
As far as getting into it with a grinder,, GOOD LUCK,,
These are both fabricated out of 1/4" thick steel, or thicker.
These would be great for handguns,, the 4 drawer high one would hold a TON of handguns.
I had plans for them when I had a previous business, now, they take up space.