Our adult rack - picture heavy

[Anatopism]

So are your shelves 36 inches long? It looks like it from the pics but I just want to ask and make sure. I bought a unit from Lowes today that is supposedly the same size as the walmart one except it was a few dollars cheaper, but I got it home and the tubs will not fit at all Tried sideways first and there's just no way... I think maybe it has to do with where the support posts run through the shelf because the walmart ones are more offset... oh well, at least I didn't cut anything.

I'm told the shelves are 36.5 inches. It could very well be the post placement as well.