SENTRYSAFE 1.2 BIOMTC DUAL KEY. Capacity (Cu. Feet): 1.2. Extra large fire safe ensures there is space for all your valuables and includes a tray for optimal organization; interior light for visibility; interior: 13.8 in H x 12.6 in W x 11.9 in D, exterior: 17.8 in H x 16.3 in W x 19.3 in D.