This is a drying tray for the desiccant for your AMS under the sun or in your P1 or X1. The holes and slots are 2mm. This tray should fit different desiccants on the market.
There is a cover with a notch to allow the beads to be poured back into the dry boxes. This drying tray can contain all the beads used in my AMS. They are in PLA. I dried the desiccants on my P1S build plate at 65 degrees Celsius for 7 hours with the lid covered. The chamber fan and aux fan are at 50% speed. It works pretty well. If you go with higher temperatures using high-temperature materials, it should dry quicker.
These are the dry boxes I am using from lloydliu and carlos_3_d.
https://makerworld.com/en/models/71526#profileId-75735
https://makerworld.com/en/models/39675#profileId-38948
Update: May 31, 2024
Thanks Fooblinator's suggestion for updating the fillet to a chamfer. It works exactly the same but will give a better finishing. I pulled down the fillet version and put in a chamfer version. Sorry to those who wasted your material.