Hunter H30038 HEPAtech Solo2 38 Air Purifier HEPA-type Filtration Provides Filtered Stream Of Clean Fresh Air Low Maintenance Extended Life HEPA-type Filter Lasts 3-6 Months under normal conditions Personal Space Purifier- Small enough to sit on a desktop in your home or work office, or compact enough to throw it in an overnight bag when you travel! Touch Sensitive Controls & # Digital USB Interface for Customized Personal Settings Includes (1) Replaceable Filter (Hunter Filter #30811) & 5 Year Limited Warranty