5 steel live locking bolts and 3 dead bolts - larger for even more security - 35mm diameter * Meets or exceeds the California Department of Justice requirements for an approved firearm safety device under CA Penal Code section 12087, et seq * Hardened steel plate protects from drill attack * Exterior dimensions: 59.0-Inch height by 21-Inch width by 17.8-Inch length * Interior dimensions: 58.8-Inch height by 20.8-Inch width by 12.9-Inch length