Small Workspace Air Purifier features a three-stage filter design that includes both Filtrete filter media and ionization for airborne particulate removal, and carbon for odor reduction. Filtrete filer media with ionization removes smoke, dust, pollen and other allergens from the air. Filter effectiveness lasts up to three months under normal conditions....

3M Air Cleaner w/Filtrete For Offices or other workspaces up to 12' x 18'. Help clean the air and reduce odors in your workspace. Three fan speeds. Filter change reminder. Ionizer on/off switch. Carrying handle. A three-stage filter design includes both Filtrete filter media and ionization for airborne particulate removal, and carbon for odor reduction....

Large Workspace Air Purifier features Filtrete air cleaning technology to help purify the air in your office. Designed for conference rooms or other large work spaces up to 320 square feet (16' x 20'). Three-stage filter design includes both Filtrete filter media and ionization for airborne particulate removal....