About this 3D model

Hi, I printed this addon for extra fltering and did not make holes in it as its not needed. Double sided tape on case and fan is enough (total weight is light). And fan is hooked to a batterypack so lid is still easily removable and filter easily replaced. Bought filter bundle and fan from amazon. fan: https://www.amazon.de/gp/product/B081SZ7JFT/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1 Filter bundle last long time: https://www.amazon.de/gp/product/B07Y31D5Y6/ref=ppx_yo_dt_b_asin_title_o04_s01?ie=UTF8&psc=1 STL file printed on ender 3 with little support look at image.