With Filtrete™ Ultra Air Purifiers and the replacements filters, consumers can enjoy cleaner air anywhere. Filtrete™ air purifiers deliver powerful filtration in quiet, streamlined designs. The key to this delivery system is a combination of Filtrete™ filtering technology and advanced design brings air cleaners to a whole new level. Filter Type: Electrostatic; Air Cleaner Compatibility: Filtrete™ Room Air Purifier FAP01, FAP02; Width: 9"; Depth: 3/4".