In years past when I was going to expand and build racks this meant that I had to hunt to find a good price on 28 or 30 quart tubs. Then I would run into the issue of having the manufacture change the design or the tub by adding handles, changing dimensions, ect. As a result many of my racks are different height's. well I found a solution to the problem.

Taking a page from the ARS book I decided on a Bus tub for my next three racks. they are black so security wont be an issue, thin so heating isn't a problem and they are never changing..

so here to being consistent from now on.