Usage Tips:For Levoit LV H132 air purifier replacement filter: Only use for Levoit LV-H132 replacement filters to keep your air purifier in the best working condition and capacity. Note: Please remove the plastic bag of the filter, before running the air purifier. Otherwise, the device can get damaged 3-Stage Filtration: fine preliminary, true hepa and activated carbon filter. It removes 99.97% dust, pollen, smoke, odours and pet hair It also filters particles as small as 0.3 microns and larger and also filters air pollution of PM 2.5 Breathable System protect: perfect for those who are sensitive to the surrounding air 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 air filters every 6 months. Remove the filter from the plastic wrap before placing it in the air purifier colour:Black+white Material:plastic size:Approximately 192 x 183 x 63mm Package Contents: 1 x air purifier filter Only 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.