This is an excellent metal box as advertised. It is not too easy to put together but does work.

My recommendation is to seal the floor to the sides using caulk. ( there are gaps)  


In addition I would recommend replacing the nuts and self tightening bolts that they provide for the lid with others purchased from somewhere like Ace hardware (six dollars). 

Overall this is a good box. Not watertight at the base. Requires a little fiddling to optimize.