ð[Warranty]: We are committed to customer satisfaction, if you encounter any problems during use, please feel free to contact us, we will definitely give you a satisfactory answer within 24 hours.. Our unique HEPA filtration technology allows our filters to be less dense, resulting in quieter and more energy efficient air purifiers. ð[Easy to use]: Filter structure traps even the smallest particles and resists clogging to maintain maximum airflow. 1 Ξm of airborne particles, like pollen, dust and pet dander. 97% as small as 0. ð[Superior performance]: 121 replacement filter removes annoying household odors, chemicals, and gases, as well as 99. ð[Technology Innovation]: New activated carbon distribution technology, compared to carbon particles and carbon network distribution is more uniform, Absorbs household odors, fumes, chemicals and volatile organic compounds (VOCs) more quickly and effectively. ð[Perfect matching]: These filter have the same specification with original filter, replacement filters appropriate with Blueair Blue Pure 121 Air Purifier to maintain superior performance over time and ensures your warranty remains intact
