Levoit Core 300 purifier activated carbon filter

I use the Levoit Core 300 air purifier with my 3D printers to keep the air clean. After the original filter ran out, I considered buying a new one but saw that they were quite expensive compared to the purifier's price. After closer inspection, I also noticed that the original filter didn't contain much activated carbon media, so I decided an upgrade was in order. Since I don't use the filter to clean the air of dust particles I simply vacuumed the outside of the original filter. Next, I designed an insert for the original filter that will hold as much activated carbon as possible. This is the result:The insert consists of 3 parts. The main basket shown in the picture, top, and bottom covers.The top cover is glued in place and the bottom one screws in so that the media can be replaced. (This version unfortunately doesn't work with the 300s model but you can find a link to the one that does at the end.)A helpful user reported that even his 300 version purchased later tha