I gotchu, what do you need? We got:
260-04-0212 - smallest one, 4x4. Fits in the 3 and 4 slot lid holders
260-04-0686 - largest one, 5.5x5.5. I keep 4 stacks of sample cups in one of these and I have a couple more for caramel bottles, mocha bottles, and some other toppings
260-04-0266 - "plexi cup holder 31oz" so I'm guessing this is the tallest one, I'd estimate it at like 4.5x4.5 because it's between the other two and seems closer to the smaller one (very tall, though)
260-04-0267 - "plexi lid holder 31oz" I'm guessing this is the one that is the same size as the "cup holder 31oz", but it has one side that is open so you can grab lids easier. I'm not 100% sure on these last 2, but it's my best guess.