I've never tried or even thought to...
I have the AP 375 combo rack and have both types of tubs. I'll try to remember when I'm off work to try out some other tubs I've got laying around. Pretty sure I have a 28qt tub I can try out. I doubt 32qt would fit since it is taller.
Specs from the tub websites for Container Store:
22.5" x 14.75" x 5.375"
Sterilite 28qt for the 1655 from their website:
23" x 16.25" x 6"
This would include the lid from my experience, plus dimensions listed on sites using these tubs tend to list 22.175" x 16" x 5.625"
There is wiggle room at the top and especially the front to back on my rack where the narrow side would go definitely sticks out enough that I think it is feasible, though it would require air holes because it would be tighter at the top, possibly with no gap.
I don't think I have any other tubs around that would he candidates to fit. Most of my other spare tubs are Hefty which are definitely too tall.
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