[pawpawdiv9]

i got 2 safes. One is the Sentry Safe (in case I take some cards somewhere) and the other is a bigger electronic one.
I work in the construction field and know a bit about fire-ratings. Best is concrete-blocks(2-4hr if solid). Then the thick 1" inch stuff (core-board) used in elevator shafts. Then its your basic 5/8 sheetrock (1hr). Also, theres a mineral wool insulation that's reisitant (we call rock-wool)
Back to the safes. Buy the best rating...it just means it will stay below 350 degrees for that certain amount of time.
But keep in mind, paper discolors at 350 degrees (as I read somewhere)
So, keep in mind, not just the safe you select, think where your putting it as well.
Best bet- is the bank.