Monitor shelf for HP 23xi

I have too many small items that were just cluttering up the place and a wide open space above my monitors.  I decided my first 3d model would be a simple shelf to fit my HP 23xi monitor (mostly because it was a regular thickness at the top). Hopefully it will be useful for other people.

This is a simple shelf with a 14mm gap that fits on top some monitors. Wide enough to fit a game controller top. I put an edge along the sides to prevent fall off the back. For some reason I also added a bumper on side of the shelf were the monitor sits. It might be on the thin side, but it is not meant to hold anything heavy.

I used mouse ear brims to help hold it during printing. For my monitor I made two shelfs 180mm long and one 175mm (the green ran out), just make sure it is not uniformed scaling.