Dual-Locking System: It requires two separate keys to be turned simultaneously to open, providing an extra layer of access control and security.Fire Resistance: As indicated by the bright red sticker stating "Be Free from Fire!", this unit is built with specialized refractory materials to protect important paper documents, cash, and valuables from high temperatures during an emergency.Tamper-Resistant Build: It features a heavy steel door with massive interlocking locking bolts and external heavy-duty hinges to protect against forced entry or burglary.