I design this filter with the main purpose of preventing dust and cat fur from entering the enclosure. Please note that adding this filter will reduce the efficiency of your enclosure fan and will definitely cause a heat creep when you are print anything with PLA since the airflow will have more resistance.
I print this with Polymaker PolyLite PLA and Faxxible PETG as per their recommended nozzle and bed temperature. No issue thus far.
As for the print setting, I just went with Prusa recommended setting and it work fine with me.
Feel free to share and remix.
For the nut and bolts, I use M3 x 10 bolt and M3nS nut that come along as a spare.
The author remixed this model.