IKEA LACK Table top vents

I needed top vents for my Prusa enclosure, so I've made these.
Printed with PETG, 0.4 nozzle, 0.15 layer.
PETG have enough strength to hold inner part, but a little spring may be needed as well.
I'm using air conditioner filter.
Most parameters can be changed in freecad model attached.

cheers