what do the stacking boxes look like?

Competition Rules/Strategy
1

What exactly do the boxes look like? Do they have lips or tops?

2

There are several threads in the “Computer Animation” forum that have 3D images of the bins, if you want to see one. To answer your question, however, the boxes do have lids on them.

3

There are a few images in the picture gallery, too.

http://www.chiefdelphi.com/forums/pictures.php?s=&galleryid=74&perrow=7&trows=5&quiet=quiet&direction=DESC&sort=date