Hollon has designed one of the least expensive drop safes on the market today with the DP450LK. The extra thick 11 gauge steel in the body and door will resist hand and burglary attacks. To prevent fishing attacks, Hollon uses NEW double row anti-theft "Shark Teeth" baffle system. This will protect your deposits. To make it easier to access the internal compartment, there is a digital lock which eliminates the need for making multiple key copies. The code can easily be changed in seconds using 3-8 digit codes. The digital lock runs on 4 AA batteries. The inside of the Hollon DP450LK drop depository safe features grey carpet mat padding on the bottom. There is one removable but non-adjustable shelf. We recommend that you bolt the DP450LK to the floor or wall using the pre-drilled anchor holes in either the back or bottom of the safe. This will secure it and keep someone from removing it from your premises to break into it at a later time.