【Compatible Model】The KJ80 HEPA filter is specifically designed for model KJ80 air purifier, ensuring perfect compatibility. The [filter size is 4.9*4.9*5.9 inches], making it an ideal fit for your air purifier. Please note that it is not compatible with the KJ150 model air purifier. 【Super Value Pack】Get 4 packs of high-quality KJ80 filters of premium quality ,it takes a cost-effective solution to your machine keeping a high performance. 【3 Stages Filtration Systems】Our filter features a 3-stage filtration system, consisting of fine preliminary filter, H13 true HEPA filter, and activated carbon filter. This powerful combination effectively captures 99.97% of microscopic particles as small as 0.3 microns, including pollen, pet dander, dust, and significantly improves indoor air quality. The activated carbon filter also helps to absorb unwanted odors, such as pet odors, cooking smells, smoking, and VOC’s. 【Replacement frequency】Installing the filter is quick and easy with no tools required. Before use, simply remove the plastic bag from the new filter. It is recommended to replace the filter every 3-6 months, depending on your usage frequency and surrounding air quality. This ensures optimal performance and keeps your air purifier running smoothly. 【Buy With Confidence】If you have any questions and issues, please feel free to contact us. ASIN B0C6Q2WCYR Brand Name SAKEGDY Unit Count 4.0 Count MERV Rating 13 Manufacturer SAKEGDY Model Number KJ80 Material Type H13 True HEPA Filter and Activated Carbon Filter Product Grade new Number of Items 4 Compatible Devices KJ80 Item Dimensions L x W x Thickness 4.9 L x 4.9 W x 5.9 Th