DESC: The "Puri-Clear 55" by Slant Fin is a Four Stage Air Purifier with Ionizer & Fragrance Dispenser. This desktop air purifier provides quality multi-stage air purification with a pre-filter, activated carbon filter, 3M Filtrete electrostatic filter and a negative ion generator. Convenient controls clearly marked for power, ionizer and fan. ragrance dispenser allows a pleasant scent to be added to the air. Indicator lights show the operational status at a glance.