SentrySafe pioneered the fire safe with unique proprietary fire insulation. The main component of the insulation
is cement with special additives that allow it to trap millions and millions of water molecules in the cement.
When a fire rages outside the safe, the water molecules boil and create a vapor barrier. The vapor barrier keeps
the interior of the safe below 250°, well below the temperature that paper will burn or DVDs or other digital media will melt.