Blueair Pro Compatible Particle Filter for M, L, XL Air Purifiers - Dust and Odor Removal

[Non OEM] Blueair replacement particle filter designed to fit the Blueair Pro M, L, XL air purifiers; | HEPA technology quietly captures 99.97% of harmful small particles such as smoke, pet dander, dust and harmful pollutants down to 0.1 microns; | The gradient filter structure is designed to maximize capture of ultra small particles, while trapping the particulates and preventing them from being re-released back into the air; | High performance with Low maintenance. Combines the best in electrostatic and mechanical filtration technology; | The gradient structure of Blueair filters traps particles of all sizes while maintaining maximum airflow. It resists clogging and won't re-release particles back into the air, even when the filter is heavily loaded.