The Secure Containment Hall is the fifth Vault Room a Group can purchase out of the seven (7) Vault Room sizes available. The Secure Containment Hall measures 4x4 grids and has a cost of 2,250,000 Prestige. This room allows one (1) Battery Base Item to provide backup power. One (1) Item of Power Base Items can be placed in this room. Three (3) Defensive Base Item can be placed in this room.