Computer Top Shelf-Spacer 280mm long x 180mm Width. To be used on top of the computer which has openings for computer ventilation. This way can be used to put like USB Hub, Hard Drive or something else with out closing ventilation. Other wise is useless space that you can't put nothing there.

The bottom of the legs have openings for 18mm x 3mm magnet that can be glue so the shelf will not move.

I also Included a Leg cover. You can plug the opening and glue something else on them or what ever.

There is a step file so you can modify if you want too.