I no longer use the air filter on my Voron and decided to replace it with a back plate with holes for my cables to pass through the rear instead.  This is an imperfect remix of the model by RM.  I loaded this into Tinkercad for a quick touchup, but some strange cracks appear at some of the screw holes.  It's not pretty, but it works.  At some point I will replace with something better.  But if you can make use of RM's, that's probably the best option.  I thank RM for his work.