So there are few easy ways to do that. Firs step is obviously same as @Tushar22 suggested. After that you can use any of the following option
Go to some signboard maker around your town, give him exact size of the front glass you just removed and ask him to CNC/ laser cut the 3mm acrylic in the densest mesh possible. You can go for 3-4 mm MDF too. Now glue the MDF/Acrylic to the front panel from where you removed the tg
Find the hardware stores near you, they generally have these fine mesh or may be the kitchen trolley manufacturers… give size get it them and get it cut.
The last option is one with least strength but may be best airflow… Try to find the bike seat cover dealer around you… they have this 3d mesh type covers that comes in nylon may be… get that and try a way to attach that to front panel… Velcro can be a option… make 2-3 covers… and then regularly remove the mesh from velcro… wash it… til then keep the other one on… light wait and easy to maintain.
you can use the nylon net that comes for Windows to stop mosquitos… u can use a piece of black duppata (thinker one) as dust filter
So some crazy ideas… Try them, last 2 won’t cost much… just if you find a way to get good finish it will be awesome… 1st 2 are very standard… but will involve cost…