Receiver dust filters

I had to return my logitech z623's because they were glitching out in lots of different ways so i"m using this pioneer 5.1 system atm. To have the volume dial in easy reach it can't be in a cabinet so i made these dust filters for it.

i just used flywire, adhesive backed foam strips and strips of fridge magnets, nothing fancy but it does the job. could have bought pc dust filters but these were free and fit the vents perfectly.