Firelock® is the gold standard for protective enclosures, offering the only 4-hour fire rating for paper documents, digital media, and artifacts:
Class 350 four-hour rating for protecting paper documents
Class 150 four-hour rating for microfilm, computer equipment and historic artifacts
Class 125 four-hour rating for computer media, digital records and sensitive server equipment
FIRELOCK® vault chambers are designed with an integrated vapor barrier to ensure that high moisture levels or steam cannot penetrate the vault walls and damage backup tapes, IT equipment, historic documents, business records or other information assets stored within the FIRELOCK® vault.
Eliminating steam or high moisture levels is critical to protecting computer media. UL 72 testing specifications mandate that vault and safe environments must not exceed 125°F (52°C) or a relative humidity above 80% for the duration of the rating within the vault chamber.
Fireproof vaults are classified in terms of an interior temperature limit and a time in hours. Three temperature limits are employed:
Fire test ratings are given as 4, 3, 2, 1 or 1/2 hour durations. The complete rating indicates that the specified interior temperature limit is not exceeded when the device is exposed to the standard fire test for the given length of time.
The classifications of 150°F (66°C) and 125°F (52°C) further require that interior relative humidity of 85 and 80 percent, respectively, cannot to be exceeded during the fire test and cool down period.
After a five-hour endurance test to 2,070°F, the FIRELOCK® vault is immediately exposed to high-pressure fire hose spray to ensure the vault is capable of withstanding not only heat but the fire fighting effects as well
To learn more about Firelock®, visit their website: https://www.firelock.com
*Reference: UL 72 tests for fire resistance of records protection equipment. UL stands for Underwriters Laboratories of Northbrook, Illinois, a Standard Testing Laboratory.