About this itemIncludes Levoit air purifier and official Levoit replacement filters to maintain performance.3-layer filtration: Fine preliminary, Efficient filter and activated filter. Efficient filter of the 3-in-1 filter removes dust, pollen, and more airborne particlesALWAYS HIGH-QUALITY: Everyone deserves to feel refreshed and safe at home. This air purifier is ETL listed and FCC. Choose Levoit for reliable products that are safe and user-friendly!WHISPER-QUIET: Trying to sleep with rattling or loud humming noises coming from your air purifier? With noise levels as low as 25, this air purifier is so quiet, you can run it throughout the night and sleep soundly!