[Perfectly Compatible] This M03 replacement filter is compatible with for M03 Air Purifiers perfectly ONLY. ATTENTION PLEASE: NOT compatible with for M01, M02, AP-S0610L, B-D02L Ai. [3-stage Filtration System] This filter has a 3-stage filtration system, fine pre-filter+H13 True HEPA filter+ High-Efficiency Activated Carbon Filter, 360° filtering particles, and smells. [Highly Efficient Filtering] ①The pre-filter Fine preliminary filter attaches to large particles such as dust, fibers, and hair. ②True H13 grade HEPA filter cleans up 99.97% of airborne particles down to 0.3 Micrometres in size, such as fine dust, pollen, pet dander, smoke, and odors. ③The activated carbon filter efficiently absorbs household odors and fumes from pets, cooking, smoke, wildfire. [Easy to install] This M03 air filter is easy to replace without tools. For optimum performance, please replace the M02 air purifier filter every 3-6 months depending on the usage and environment. A dust filter is created in tiny dust and to reduce secondary air pollution. Compatible Models:For M03 Colour:White & Black Material:Composite Materials Package Contents: 2 x Air Replacement 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.