Originally Posted by
Digital_Cowboy
About the only "change" I can think that I'd make is to use machine bolts with acorn nuts, placing the nuts inside of the box. And installing hasps of some sort so as to be able to lock box to keep people honest.
Hmmmmm.... If they had the proper spacing, to fit through the holes in the angle irons, u-bolts would work quite nicely on the outside. Then the nuts go on the inside. The lid of the tub has holes that go through the lip of the tub itself, which could be locked closed.