Muffin AC Fan Stand

I rescued a pair of boxy AC fans from a play that was being struck, and they'll been sitting on my desk keeping me cool. However, their open faces kept sucking in bits of paper and biting my fingers. This THING is a matching front cover (flat) and back cover (with support legs).

[My particular fan](https://www.galco.com/techdoc/rtrn/028027_dat.pdf) is 119.6mm tall and wide, and has holes 4.06mm holes that are on 104.8mm centers; feel free to re-scale for your fan! The depth of each cover is 3mm - enough to be sturdy, but not so much as to impede airflow.