Sentry safe are poorly constructed from low guage mild steel filled with a fire resistant self setting foam resin and then a encapsulated plastic insert is used to form the major components which give the look and appeal of a superior safe.
Trouble is the safe can be accessed with little more than a circular saw or a hammer. The safe is inferior for storing more than your ultra ego its a fire safe not a cash safe and will not protect your valuables from theft.
Although weighty this item is not fit for more than being a lockable cupboard made to look like a high security safe.
Don't take my word for it put sentry safe into "you tube" and see for yourseld how amateur safe crackers break these safes in less than 4 minutes.
Overall this item is aesthetically pleasing it is not more than a toy...it has no usable deterrent it is false economy to buy one for valuables other than that which need protection from fire. In my opinion its worth about eighty pound as the materials must have cost a tenth of that to manufacture it...it is so inferior dont be duped.