AskDefine | Define strongbox

Dictionary Definition

strongbox n : a strongly made box for holding money or valuables; can be locked [syn: deedbox]

User Contributed Dictionary



strongbox (Plural: strongboxes)
  1. A sturdy box with a lock for keeping valuables in.

Extensive Definition

A safe (also called strongbox or coffer) is a secure lockable box used for securing valuable objects against theft or damage. A safe is usually a hollow cuboid or cylinder, with one face removable or hinged to form a door. The body and door may be cast from metal (such as steel) or formed out of plastic through blow molding.


Specifications for safes include some or all of the following parameters:
Opening a safe without access to the key or knowledge of the combination is known as safe-cracking. This is a popular theme in heist films.
A diversion safe or hidden safe is a safe that is made from an otherwise ordinary object such as a book, a candle, a can, or even a wall outlet plug. Valuables are placed in these hidden safes, which are themselves placed inconspicuously (for example, a book would be placed on a book shelf).
Fire resistant Record Protection Equipment consists of self-contained devices that incorporate insulated bodies, doors, drawers or lids, or non-rated multidrawer devices housing individually rated containers that contain one or more inner compartments for storage of records. These devices are intended to provide protection to one or more types of records as evidenced by the assigned Class rating or ratings; Class 350 for paper, Class 150 for microfilm, microfiche other and photographic film and Class 125 for magnetic media and hard drives. These types of enclosures can be rated for periods of 1/2, 1, 2 and 4 hour durations.
In addition, these enclosures may be rated for their impact resistance, should the safe fall a number of feet to a lower level or have debris fall upon it during a fire.
Burglary resistant safes are rated as to their resistance to the type of tools to be used in their attack and also the duration of the attack.
The attack durations are for periods of 15 min., 30 min. and 60 min.
Safes can also contain hardware that automatically dispenses cash or validates bills as part of a Automated Cash Handling system.

Room-sized fireproof vaults

For larger volumes of heat-sensitive materials, a modular room-sized vault is much more economical than purchasing and storing many fire rated safes. Typically these room-sized vaults are utilized by corporations, government agencies and off-site storage service firms. Fireproof vaults are rated up to Class 125-4 Hour for large data storage applications. These vaults utilize ceramic fiber, a high temperature industrial insulating material, as the core of their modular panel system. All components of the vault, not just the walls and roof panels, must be Class 125 rated to achieve that overall rating for the vault. This includes the door assembly (a double door is needed since there is no single Class 125 vault door available), cable penetrations, coolant line penetrations (for split HVAC systems), and air duct penetrations.
There are also Class 150 applications (such as microfilm) and Class 350 vaults for protecting valuable paper documents. Like the data-rated (Class 125) structures, these vault systems employ ceramic fiber insulation and components rated to meet or exceed the required level of protection.
In recent years room-sized Class 125 vaults have been installed to protect entire data centers. As data storage technologies migrate from tape-based storage methods to hard drives, this trend is likely to continue.

Fire-resistant safes

A fire-resistant safe is a type of safe that is designed to protect its contents from high temperatures or actual fire. Fire resistant safes are usually rated by the amount of time they can withstand the extreme temperatures a fire produces, while not exceeding a set internal temperature (e.g. less than 350ºF over 30 minutes). Models are typically available between half-hour and four-hour durations.
An in-floor safe installed in a concrete floor is very resistant to fire.
Both the standards witting for fire-resistance and actual testing of safes is performed by Underwriters Laboratories in the USA.


* Locks, Safes, and Security: An International Police Reference, published by Charles Thomas Publishers, Springfield, Illinois, United States. (2000) ISBN 0-398-07079-2.

See also

External links

strongbox in Czech: Trezor
strongbox in German: Tresor
strongbox in Spanish: Caja fuerte
strongbox in French: Coffre-fort
strongbox in Korean: 금고 (상자)
strongbox in Italian: Cassaforte
strongbox in Hebrew: כספת
strongbox in Limburgan: Kloes (bergruumde)
strongbox in Hungarian: Széf
strongbox in Dutch: Brandkast
strongbox in Japanese: 金庫
strongbox in Norwegian: Seif
strongbox in Polish: Sejf
strongbox in Romanian: Casă de bani
strongbox in Russian: Сейф
strongbox in Finnish: Kassakaappi
strongbox in Swedish: Kassaskåp
strongbox in Ukrainian: Сейф

Synonyms, Antonyms and Related Words

Fort Knox, bank, bursary, cash register, cashbox, chest, coffer, coin box, depository, exchequer, fisc, gold depository, locker, money chest, penny bank, piggy bank, pork barrel, public crib, public till, public treasury, public trough, repository, safe, safe-deposit box, storehouse, strong room, subtreasury, till, treasure-house, treasury, vault
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