Fire-resistant safe is UL Classified to endure 1 hour at 1700°F and keep interior temperatures safe for irreplaceable documents, valuables, DVDs, and USBs; ETL Verified to withstand a 15 foot fall during a fire and remain closed Water-resistant safe is ETL Verified for 24 hours of protection in water up to 8 inches deep offering peace of mind in the event of a flood Set your own digital combination fire safe for strong security; digital combination safe features four live-locking bolts, steel construction, pry-resistant hinge bar, and shelf Exterior: 16.3 in. W x 19.3 in. D x 17.8 in. H; door requires 14.75 in. of space to fully open; Interior: 12.6 in. W x 11.9 in. D x 13.8 in. H; large 1.23 cubic foot capacity; weighs 85.25 pounds For optimal performance, SentrySafe recommends the use of four high-quality, name branded, alkaline AAA batteries with an expiration date of 8-10 years from the current year. Generic and rechargeable batteries often do not have the lifespan needed to support long term usage