Fire resistant for 1 hour to 1700 degrees Dual Access Digital / Key Lock with Emergency Override Key.2 live locking/2 dead door bolts. Interior Dimensions(HxWxD): 13.77 in. x 12.6 in. x 12.2 in. Exterior Dimensions(HxWxD): 18.75 in. x 17.25 in. x 19.5 in. Weight: 122 lbs. First Alert 2084DF Steel Fire/Anti-Theft Digital Safe The First Alert 2084DF fire safe's anti-theft features include steel construction, heavy duty steel hinges, and 4 solid steel bolts. The fire safe's electronic keypad lock allows users to program a personal 3 to 8 digit passcode. The digital lock is designed to be used in conjunction with the entry key: the entry key operates the safe's live bolt after the passcode is entered into the digital lock. The entry key can be left in the keyhole using only the digital lock to secure the door, or it can be removed for an extra level of security. Two entry keys included. Also included is an emergency override key which can be used to bypass the digital passcode and open the safe in case of battery failure (4 AA batteries included). This First Alert 1.22 cubic foot fire safe is UL classified for 1 hour to withstand an external temperature of 1700 degrees Fahrenheit while maintaining an internal temperature of less than 350 degrees. First Alert 2084DF Steel Fire/Anti-Theft Digital Safe Features: Dual Access Digital / Key Lock with Emergency Override Key. 2 entry keys/1 override key included. Heavy-duty steel hinges. 2 live locking/2 dead door bolts. Interior Dimensions(HxWxD): 13.77 in. x 12.6 in. x 12.2 in. Exterior Dimensions(HxWxD): 18.75 in. x 17.25 in. x 19.5 in. Weight: 122 lbs Removable steel shelf. Shelf mounting hardware included. UL classified media protection device tested to withstand an external temperature up to 1700 degrees for 1 hour. 5 year limited warranty, with lifetime fire replacement guarantee. About First AlertWith a complete line of home safety devices, First Alert is America's most-recognized and most-trusted safety brand. Detectors, fire extinguishers, safety boxes, and other preparedness products give home and business owners alike increased peace of mind. First Alert is actively involved in the communities it protects, too, with longstanding outreach initiatives supporting fire service and other organizations dedicated to fire prevention, carbon monoxide detection, and safety.