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What procedure does a testing laboratory use to test FIRELOCK® vaults?

fire door testing

(Transcript) When you purchase a FIRELOCK® Fireproof Vault, you are getting a fire protection system that has been rigorously tested. You will notice a small label with major ramifications: it is the laboratory label that verifies that the vault has been tested as a unit to provide the signified fire protection for paper, film, digital media, servers, and valuables.

The complete FIRELOCK® Fireproof Modular Vault assembly endures a grueling 5-hour test under the UL-72 ASTM-119 Time Temperature Curve. The FIRELOCK® vault greatly exceeded previously documented levels of protection. The Vault was subjected to the Time Temperature Curve with monitoring thermocouples on the cold face and interior wall surface of the vault. The vault was required to maintain predetermined temperature limits for the protection of documents and media stored within the vault chamber. The vault ratings vary according to the size of the vault, but all sizes exceed the required levels of protection by a factor of two and sometimes three.

In brief, the vaults are tested by a nationally-recognized third-party laboratory to measure the time they can be exposed to fire and still maintain the desired internal temperature. They are exposed to a temperature exceeding the average temperature of a facility fire for a designated period of time. They are then left to cool off, and the contents are examined for integrity. Additionally, the walls are checked for evidence of heat or humidity damage. 

That UL sticker inspires the confidence you need that FIRELOCK® fireproof modular vaults are your best choice for protection, as testified to by businesses, governments, healthcare and pharmaceutical entities, museums, law enforcement agencies, and others around the country.

FIRELOCK® provides these articles for information purposes only. We do not necessarily provide all products and services mentioned; they are for comparison purposes only. Always contact a professional about non-FIRELOCK® products and services mentioned. 


Since 1982, FIRELOCK® has been the world’s leading manufacturer of media-rated modular vault chambers. Unlike poured-in-place concrete vaults, FIRELOCK® vaults are constructed from individual panels, filled with a heat-resistant ceramic material, and they are lightweight, movable, and expandable. When combined with current high-density storage systems,

FIRELOCK® vaults offer extremely high space efficiency at a considerable cost advantage per cubic foot of storage. The value of assets stored in FIRELOCK® vaults today reaches hundreds of billions of dollars and ranges from priceless animation cells and World Wrestling Entertainment videos to pharmaceutical research records and U.S. Department of Education student loan information.

With a FIRELOCK® vault, you invest in the highest-performing vault on the market today to ensure the protection of your most vital records and irreplaceable items. You gain the ability to store microfilm, computer media, file servers, and paper in one location, as well as the peace of mind that comes from knowing that all the environmental- and fire-protection elements are in place.

FIRELOCK® has been in business since 1982, and we have installed over 2000 vaults around the world. Because of this broad experience, we know how to build a vault that will provide you with maximum protection today and the flexibility to grow with you into the future.