Under-sink Shelf Stack

I ordered a shelf online and it was way too big to fit with all of the pipes under my bathroom sink, so made this model that will not allow water if drip or flooding happens from away from the shelf. Other shelves had holes to allow for drainage, my last issue happened because the drainage holes let water in from underneath the shelf, this one does not have drainage holes.I wanted something that could be printed on one plate so here we are, the legs are printed in place and the top shelf can squ