What is a Fireproof Safe?

FireKing fireproof safe

A fireproof safe is a type of safe that is designed to protect its contents from high temperatures or actual fire. Fire resistant safes are usually rated by the amount of time they can withstand the extreme temperatures a fire produces, while not exceeding a set internal temperature (e.g. less than 350ºF over 30 minutes). Models are typically available between half-hour and four-hour durations.

An in-floor safe installed in a concrete floor is very resistant to fire.

Both the standards witting for fire-resistance and actual testing of safes is performed by Underwriters Laboratories in the USA.