For the price point the safe seems to be of good quality.  I got it without knowing that the only way it could be water proof is if it were bolted to a concrete floor.  The only place I can put my safe is in the basement, and if there were a fire hope the basement filled with less than 12" of water.  If this were to be bolted to wood you run the risk of the wood burning off of the anchors which would then allow water, heat and gases to penetrate the inside as the anchors would then be loose on the inside of the safe.  The install instructions do not address this...