What is a UL Class 125 rated fireproof cabinet?

A UL Class 125 rating means the cabinet interior temperature does not exceed 125°F during the specified fire test duration. This threshold protects floppy disks, magnetic tape, and older data media from heat damage. Modern digital storage media (SSDs, CDs, DVDs, USB drives) have lower thermal tolerances, and some require even more stringent protection. Class 125 cabinets are thicker, heavier, and more expensive than Class 350 paper-protection models. OfficeFurniture2go.com can specify media-rated options — call 1-800-460-0858.