Safe Deposit Boxes and Lockers are composed of a powder coated steel outer case and rugged extruded front frame. The 7/16" thick solid doors are covered with a stainless steel cover for endurance and appearance. An interlocking heavy flange provides added resistance to attack. The double nose U.L. Listed double key changeable locks provide flexibility in setup or when changes are required. Two customer keys are included. Each opening comes with a changeable numbering system allowing for future expansion and a sturdy, removable metal bond box.