Feature 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.Item Type: Purifier FilterWeight: 828g / 29.21ozMaterial: High Efficiency Particulate AirProduct Size: Approx. 45x36x5cm / 17.7x14.2x2.0in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Purifier FilterNotePlease take the new filter out of the plastic bag before putting it in.