Screwless fan grill (80mm, 120mm)

A lid to prevent foreign objects like cables, fingers, etc. from getting in the fan. Ideal for PC case fans cases,  homemade computer cases, electronics cabinets, etc. It uses conical frustums as the pegs to push into the screw holes of the fan. While this may not be as secure as screws, this eliminates the need for screws.

I've provided the original Sketchup project file in case you want to remix it.