Features: Exterior Dimensions: 2 A 1/2" x 8 A 1/2" x 11" Interior Dimensions: 2" x 6 A 1/2" x 10 A 3/4" Heavy Gauge Steel Soft Foam Inside High Strength Lock Mechanism Precise fittings are virtually impossible to pry open with hand tools Built-in computer blocks access after repeated invalid keypad entries Easy to use No-Eyes Keypad allows for quick access