What does a UL fire rating mean on a fireproof cabinet?

UL (Underwriters Laboratories) fire ratings indicate how long a cabinet can withstand a specific fire temperature while keeping the interior below a critical threshold. The most common ratings are: Class 350 (interior below 350°F — standard for paper documents); Class 150 (interior below 150°F — for photographic film and magnetic media); Class 125 (interior below 125°F — for digital media). The time rating (30 min, 1 hour, 2 hour) indicates duration tested at a specific external temperature. At OfficeFurniture2go.com, all our fireproof cabinets include the UL rating — call 1-800-460-0858.