Replacement Filter for Air Purifier 400S Part 400S-RF H13 Filtration 5 LayersCAREFULLY CHEK YOUR MODEL NUMBER to be sure this is the right filter for your Air Purifier. This filter is compatible with for air purifier models 400S, 400s-RF, Work just like the one that come with unit.Cost-Effective Price: Value pack save much cost for your all year round air cleaning need. Higher level filtration performance for long time using, It is recommended to replace filters for every 6-12 months. Using an old filter lowers your air purifier's efficiency.H13 True Technology : A higher grade true material was used with 360degrees Filtration, Captures 99% of particles down to 0.3 Micrometre in diameter. Improve your indoor air quality to breath and sleep easier, avoid sniffles and sneezing.EFFICIENT ODOR REMOVAL: Activated Carbon Filter can filtering various unfavorable odors and fume, including volatile organic compounds (VOCs), tobacco smoke, cooking smell, as well as filtering pet odors to significantly reduce household odors, creating fresh and pure air for your family.Easy to install: fit for 400S ,no more cutting for filter. Replacement your old filter without others tool, save your time and convenient.Colour:WhiteMaterial:composite materialPackage Contents:1 x Air Purifiers Filter1 x brushOnly the above package content, other products are not included.Note: Light shooting 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.