The answer is, Hall’s safes has documented proof that their safes have sustained 1800 degrees F outside for 2 hours, while maintaining an inside temperature of less than 140 degrees F. The lower inside temperature provides better protection for your valuables and reduces the risk of damage.
All safes should provide a measure of fire protection but some safes do not. This is not a regulated feature and is up to the discretion of the manufacturer. Each manufacturer has their own interpretation as to sufficient standard fire protection in a safe. Avoid any safe with vent holes in the body as this will allow heat into the safe. Increasing the internal temperature could destroy the contents with flames or smoldering. Look for doors that fit both tightly and uniformly. Avoid safes that require adjustment screws to secure a tightly fitted door. A sealed safe with a built in air space will act as insulation between contents and the outside heat. Be suspicious of other manufacturers that claim they have tested their safes for 30 minutes at 1200 degrees F with inside temperatures reaching 350 degrees F and no damage to the contents. These claims are questionable because computer disks, photographs and paper melt or smolder at such temperatures.