Qidi Plus4 Internal HEPA Filter

This is my attempt at making a replacement for the internal chamber circulation fan filter box on the Plus 4 that can accept HEPA filters. I used the same filters as the person who previously designed one, but I designed it a little different. I liked the idea of the other filter box. However, I did not like that it hung over the lip and allowed air in through the bottom. I changed it up a little so that it fits a little snugger, is cleaner, and uses less filament. I also tore off the ends of the filter to help it fit better. They are just glued on and came off easily. USA Filters: https://a.co/d/5kqMt2F Canada Filters: https://a.co/d/6nJDwxg I printed it with ASA to withstand the temperatures of the heated chamber. No supports needed, but I suggest using a brim because the front corners don't have much surface area to stick to the bed. Might replace it with some PA in the future if I ever get any.