Yesterday for the Darkroom symmetry challenge, I posted a top down view of this. It is an air purifier, so if you said a fan, you were partly right. It pulls air in through the holes all around the bottom and blows the clean air out through the top. It is very low speed and silent.
@thewatersphotos Yes, we think so. I had pneumonia a couple of years ago and this helps me breathe better in the house so I don’t have to mask up. It removes cooking and pet hair well, so I think probably fabric. We have to change the filter every 6 months.