H13 True Hepa Technology: filters 99. 97% dust, pollen, smoke, odors, mold spores, and pet dander. The air filters catch particles as small as 0.3 Micrometre3-Stage Filtration System: H13 True HEPA Filter,Pre-filter and activated carbon filter reduce unwanted odors in your living spaces.Perfect for anyone wanting to improve air qualityProperly sealed: filters are sealed to protect their lifetime. It is recommended to replace air filters every 6 months. Remove filters from plastic packaging before placing them into air purifierMaterial:plastic+cottoncolour:As ShownPackage Contents:5 x Purifier filterOnly 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.