Honeywell Top Air Purifier, Up to 80 Sq. Ft, 14-1/2"x11-3/16"x7" - Tabletop air purifier uses a permanent HEPA filter that reduces airborne particles such as dust, tobacco smoke, pollen, cat dander and mold spores. Filter is easy to clean. Just vacuum every three months. Ionizer with three power levels delivers extra cleaning power. Air purifier is designed for use in horizontal or vertical position to fit in tight spaces.