The SentrySafe Executive Digital Safe EF3428E is designed to preserve your records and valuables with added security and peril protection. ETL Verified fire endurance protection for documents, records, and valuables provide peace-of-mind that your items are safeguarded when the unexpected happens. This safe also offers a programmable digital lock for added security and interior shelves to keep your items organized Is This Safe a High-Quality Product? The SentrySafe Digital Safe meets very high standards. After having undergone rigorous testing at the Edison Testing Laboratories, it has earned the ETL Verified mark. This proves that it has met certain quality and reliability requirements established by the North American Safety Standards. What Materials Is the SentrySafe EF3428E Fireproof Safe and Waterproof Safe with Digital Keypad 3.4 Cubic Feet Made of? The exterior of the Sentry Digital Safe is made from solid steel with an encased digital, battery-powered locking system. The interior of the electronic safe is made from a soft inner lining to ensure your valuables are not scratched. Adjustable shelving is included in the interior for customization. And it comes complete with sturdy bolt down hardware to prevent unauthorized movement. What Is the Size of the SentrySafe EF3428E Fireproof Safe and Waterproof Safe with Digital Keypad 3.4 Cubic Feet? The SentrySafe Digital Fireproof Safe Box’s dimensions are the following: Exterior: 21.7"L X 19.0"W X 27.8"H Interior: 19.4"L X 11.7"W X 25.8"H How Heavy Is the Digital Fireproof Safe? The digital fireproof safe weighs 163lb. What Happens If You Forget the Combination for the Electronic Digital Safe? In the event that you forget the combination for the electronic digital safe, there is an included skeleton key that can be used to help you gain access to the safe.