Honeywell HFD-110 QuietClean Tower Air Purifier Easy-to-use touch button electronic controls allow you to choose from 3 air cleaning levels The convenient tower design takes up little space making it ideal for any room in your home Set the timer to automatically shut the air purifier off after 4, 8, or 12 hours Patented ifD filters capture up to 99% of ultra-fine particles from the air passing through the filters To ensure stated product performance, use only Genuine Honeywell Replacement Filters