Features:1Removal of Contaminants and Large Particles: Filter cartridges effectively remove large and airborne particles and common contaminants including dust particles dirt pollen smoke odors pet dander etc. 2Odor Removal: High efficiency particulate filters fine filters to reduce unwanted odors in the living space bringing good use experience. 3Proper Sealing:The filter is sealed to protect its life. It is recommended to change the filter once in a while. to keep your machine fresh and clean. For best results remove the filter once a month and clean it with a soft bristle brush. 4Easy Installation: Installation is very simple and does not require particularly complicated operations providing comfort for you and your family changing in minutes and without special tools. 5Compatible Models: This particle filter is suitble for Blueair 200 series models 201 303 203 270 air purifier filter particle type cartridge.Specification:Item Type: Purifier FilterWeight: 828g 29.21ozMaterial: High Efficiency Particulate AirProduct Size: Approx. 45x36x5cm 17.7x14.2x2.0inPackage List:1 xPurifier FilterNote:Please take the new filter out of the plastic bag before putting it in.