Fire Protection: A full 60 minutes of protection at 1400°F Advanced protection with 3 layers of 12mm fireboard in the ceiling, 2 layers on the walls, floor, and door Heat activated door seal expands up to 7 times its size which seals the door edge to help keep out heat and smoke Security Features: Thick 2.75 mm steel composite door and body Three hardened steel plates protects the lock from drill attacks Spring loaded re-locker keeps safe secure if lock is tampered with or removed Large door bolts (1.00” diameter), 2-sided protection (6 door bolts total) Certified with UL ® as a Residential Security Container and meets or exceeds California DOJ acceptable gun safe standards UL Listed commercial-grade Type 1 electronic lock Style and Function: External dimensions: 30"H x 20"W x 20"D (not including handle) 215 lbs Plush adjustable shelving and interior walls 3-spoke cast iron hand wheel Predrilled through the steel for a dehumidifier (3/8" opening, dehumidifier not included)