For H132 purifier replacement filter: Only use for -H132 replacement filters to keep your purifier in the best working condition and capacity. Note: Please remove the plastic bag of the filter, before running the purifier. Otherwise, the device can get damaged 3-Stage Filtration: fine preliminary, true hepa and activated carbon filter. It removes 99.97 percent dust, pollen, smoke, odours and pet hair It also filters particles as small as 0.3 microns and larger and also filters pollution of PM 2.5 Breathable System protect: perfect for those who are sensitive to the surrounding quality. It will not release hazardous substances or ozone Sealed: filters are sealed to help you to protect your service life. It is recommended to replace filters every 6 months. Remove the filter from the plastic wrap before placing it in the purifier colour:Blackandwhite Material:plastic size:Approximately 192 x 183 x 63mm Package Contents: 1 x purifier filter 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.