Compatibility: Very suitable for MA-15 purifier, including H13 HEPA replacement filter and activated carbon pre-filter.(Please Check Model Before Purchase) 3-Stage Filtration: The Pre-filter can filter pet fur, hair, scurf, the H13 True HEPA Filter can reduce out 9997% of dust, PM25, dirt in the , the active carbon filter can remove odors. Provide a comfortable and safe environment for your children and family. 3 IN 1 FILTERS: MA-15 Filters are made of 3-in-1 filtration systems including Pre-Filter, True HEPA Filter and Activated Carbon Filter. Pre-Filter remove particles such as hair, pet fur, dander and lint. True HEPA filter remove particles like household dust, and pollen, etc. Activated carbon filter helps to strongly remove unwanted odors, smoke, VOCs and more. Easy to install and clean: Easy to install, no tools required. True HEPA filter is essential for households with Children, Seniors, Pets, Allergy, smokers and Asthma sufferers. Replacement Cycle: The use of a new filter can improve the efficiency of your purifier, thereby ensuring and safe in the room. It is recommended to replace the filter every 6 months. Colour: pictures color Material: Composite material Package Contents: 2 * Purifiers Filters Only the above package content, other products are not included. Note: Light 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.