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<p>[QUOTE=&quot;Vess1, post: 1430577, member: 13650&quot;]It is just this concern that made me buy a fire/security gun safe, with 2300 degree and 1000 degree fabric insulation.&nbsp; The same they use in kilns to keep heat in, only it works in reverse.&nbsp;&nbsp; This will work pretty well, but over time can still allow the interior to reach 350 over a prolonged fire and cool down.&nbsp;&nbsp; </p><p>&nbsp;&nbsp; To me, this is too hot to risk, so I put additional Guardall safes inside, stacked on top of each other.&nbsp;&nbsp; So it&#039;s like double protection for the ceiling of the bottom one and floor of the top one.&nbsp; &nbsp; I use these as media coolers for my collection now.&nbsp; (Although each one has it&#039;s own dial and key as well. )&nbsp;&nbsp; These have been tested by two places to keep the inside contents at around 250 degrees for an hour in a 1700 degree fire with cool down, on their own.&nbsp; &nbsp; These are inside my main safe.&nbsp; &nbsp; And the fire department isn&#039;t too far away so I&#039;m not too worried about my house burning to the ground anyway.&nbsp;&nbsp; Or slabs melting on my coins.</p><p><br /></p><p>&nbsp; I think 350 for an hour would melt them.&nbsp; That is pretty hot for plastic.&nbsp; But it would be interesting to know from NGC and PCGS what the melting points are for their slabs.&nbsp;&nbsp; And what duration of time it takes.&nbsp;&nbsp; I think silver would be severely damaged by prolonged 350 degree temps no matter what the slab did.[/QUOTE]</p><p><br /></p>

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