Very flimsy and thin sheet metal - easily cut into with a common cordless die grinder. Shelf brackets are garbage - 2 of the 4 won't lock into place. One man can carry it out if not anchored, and without fairly significant fender washers, (1.25" or more), the sheet metal would tear right around mounting screws with a small pry bar or less. There is no possible way that it is fire or waterproof. A nice thick door with large bolts is useless if one can simply cut open the side with a cordless die grinder from Harbor Freight. Absolute garbage for the money - not even a good anchor. Buy a small gun safe.