This air conditioning filter features a special 4-layer structure that powerfully removes PM2.5 particles, providing clean air. I purchased this filter this year, but it's no longer needed as I unexpectedly replaced my car. It has been stored unopened. The compatible car models are listed in the images, so please check the photos before purchasing. - Brand: VALFEE - Filter Structure: Special 4-layer - Function: PM2.5 removal - Features: Contains activated carbon Please note that purchases made after the 25th will be shipped on or after the 30th due to personal matters from December 25th to 29th. If you need it urgently, please be aware of this. Thank you for looking.