After buying the wrong ones once, and going to about 6 different places to find them. I FINALY followed all the advise and went to Wal~mart to look. At first I was disapointed because I couldn't find any long enough, then I saw them. Rubbermaid, 43-1/2qt with the Cleverlatch. They were 5.96 a box, and if you go with a lidless rack then the tops don't matter, but I like the security and flexibility of regular shelfs with lidded boxes. These are the greatest lids! They lock! I will probably still use binder clips on the two front corners, but this lock is perfect.
Here's the box with the lid hinged in the back and held open.

A close-up of the latch, push one side in and it's snapped secure, push the other side in and you can lift the lid.

And the back showing the hinged side, with my 18lb cat on top for size comparison
(she's really a huge cat)

So anyone looking for boxes, go to Wal~Mart! ( I usually don't like the store, which is why I went everywhere else first)
-----
Dianne
AKA IcedGoddess
4.5 Cornsnakes
1.3 Cats
0.1 Child
IcedGoddess Creations
Castle Serpents






I am planning on using these for my adults. The smaller boxes I bought a week ago are normal covers, and that's where everyone hatched in 03 will be staying. I seriously doubt that my adults could fit in that space, but I have a tube of silicone, so maybe I'll do that just to be positive.