Silica gel container for 75 mm inner diameter filament spools

In my AMSs, to lower the internal humidity for a very long time I like to use, as many of you do, silica gel containers inside the filament rolls.
I printed several models, trying to adapt them also to the rolls with a larger internal diameter (I use Geeetech and SUNLU among others).
Since I hadn't yet found a simple model that remained stably in its position, I thought I'd design one, following the example of the many present in Makerworld.
Since it is working well in my AMSs, I share it, hoping that it can be useful to some of you.
If someone using Fusion 360 wants to modify the project, I'm uploading also my .3df file.
I print it in PETG, which is the filament I use most often, keeping it rather solid, also because in the past one of these containers broke, covering the entire floor with silica gel balls...