Constructed with solid steel plates welded with continuous welds for all parts of the safe, the B1414E B-Rated Cash Safe is designed for heavy use in a retail environment. The Hollon B1414E safe comes with a 1/2" Solid Steel Door and a total door thickness of 3" good luck getting through the three 1 1/4" massive chrome plated solid steel live locking bolts. The Hollon B1414 comes with the S&G UL Rated Electronic Lock. Now, what if the burglar wants to just punch the lock the B1414E is still protected by a drill resistant hard plate, active spring loaded re-locker and full length locking bar on the hinges. To ensure burglars don't just pick up the safe and walk away, this Hollon Cash Safe comes with 4 pre drilled mounting holes that will allow you to bolt the safe down. This is always recommended.