My Hampton Bay Mena 54 inch fan from Home Depot didn't come with a wall-mount for the fan remote, so I designed this.
It has a flat back because I use 3M sticky stuff to mount it.
https://www.amazon.com/gp/product/B000BL2REK/
You could easily drop this into Tinkercad if you wanted to make a screw hole in it.
Orient vertically for printing.
I print at .2mm layer height with 50% cubic infill in PLA+ with no supports. I print with a brim but it's probably not necessary if you get good adhesion. Took 3 hours and 17 minutes at these settings on my Creality Ender 3 and used 20 grams of filament. You could probably print at a finer layer height if you want smaller layer lines and don't mind a longer print time.
The author hasn't provided the model origin yet.