For speed of ordering, the AC350 comes only as this pre-configured option with 422 locations in the following set up:
In cross section the cabinet looks like this:
A filler tray goes between the complete stacks and constitutes one third of a round stack in its undivided form. Following are example pictures of some of this configuration.
Here is a filler tray, no divider, so you get the entire 1/3 of a plate = “1” on the config
Here is a filler tray, divided into 2, labelled “2” on the config
Here is a full stack, divided into 12. As you see from the config, these trays can be divided into 6 and 4 as well.
Finally, here is an illustration of a full round stack and a filler. The filler is on the left and is the config indicated in red. The stack on the right is a complete one and is the config indicated in green