The First Alert 2054F fire safes anti-theft features include steel construction, heavy duty steel hinges, 2 solid steel locking bolts and mounting hardware for bolting to a shelf. Over a 30 year mortgage, a homeowner faces a 96 percent chance of being burglarized and 9 percent chance of a fire. You work hard to afford all of the valuable possessions that you keep at home or in your office. Purchasing and using an anti-theft fire safe is a critical step in protecting your valuables from would be thieves and a fire. The fire safe"s 4-number dial combination lock provides a high level of security. The combination lock is designed to be used in conjunction with the entry key: the entry key operates the safes live bolt after the combination is entered into the dial lock. The entry key can be left in the keyhole using only the combination lock to secure the door, or it can be removed for an extra level of security. Two entry keys included. The 2054F fire safe has been awarded a UL classified 1 hour fire rating verifying that it will withstand an external temperature of 1700 degrees Fahrenheit while maintaining an internal temperature of less than 350 degrees Fahrenheit. The interior of the safe includes an adjustable and removable steel shelf. Dry fill guarantee: the safe is guaranteed not to develop mildew from moisture originating in the safes insulating material for five years. All First Alert fire safes are covered by a 5 year manufacturers warranty and will be replaced free of charge if damaged in a fire.