Fire rating, burglary rating, and what they actually mean
Fire ratings are expressed in time + temperature — for example, a 1-hour 1700°F rating means the interior stays under 350°F (the point at which paper chars) for one hour in a 1700°F fire. UL Class 350 ratings are the gold standard for paper; media-rated safes hold a lower internal temperature suitable for hard drives and film.
Burglary ratings (RSC, B-rate, C-rate, TL-15, TL-30, TL-30x6) describe how long the safe resists a determined attack with common tools. Residential RSC safes resist 5 minutes of attack with hand tools — fine for opportunistic burglars, not for targeted theft. TL-rated commercial safes resist 15–30 minutes with power tools and are what banks, jewelers, and pharmacies install.
Composite safes carry both ratings and are the right choice for protecting jewelry, cash, and irreplaceable documents in the same enclosure. We will tell you exactly which rating matches what you are protecting and what your insurance requires.

