1-Pack, H13 Filtration High-efficiency True HEPA Filters. Compatible with for A8 SE Air Purifier (Doesn't fit A8 Air Purifier) H13 True HEPA capture 99.97% of airborne dusts PM2.5 down to 0.3 Micrometres in size. Remove large and airborne particles, including dust, common pollutants ,Activated carbon reduce Chemicals VOCs, PM2.5,common household bad smell. Please replace regularly to keep your machine fresh and clean. For the best performance, clean the filter once a month with a soft brush gently or with a vacuum cleaner. Note:please remove the new filter from the plastic bag before placing it into the machine. Please note:Slight color difference or difference in kind, does not affect the use, please do not mind, thank you! Colour:As Shown Material:Plastic Package Contents: 1 * Air Purifier Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.