Many design available for download rely on the fan to blow thru the filter which is very inefficient.
All filters work best when the air is sucked through them, not pushed, That's why I moved the fan to the back.
Model should be printed in high HDT filament like ABS, ASA, PC.
Only modification required is to move the exhaust fan to the other side of the wall.
Link to installation instructions:
https://photos.app.goo.gl/Mw2LnperRDvaD8DZ7
Affiliate link to 5 pack Kenmore EF-2 86880 HEPA Filter used in this model.
Affiliate link to 6 pack Premium quality activated carbon filter mats
Affiliate link to the same 4 pack Premium quality activated carbon filter mats
The author marked this model as their own original creation.