You can't take those deep breaths of fresh air without the help of these Oreck Airvantage HEPA and Carbon Replacement Pre-Filters. This 1-year supply of replacement filters are compatible with your Oreck Airvantage and Airvantage Plus air purifiers. This kit includes 2 HEPA filters and 4 carbon pre-filters that remove 99.99 percent of offensive odors, pet dander, smoke, dust, and allergens. Say adios to dirty, unclean air and continue breathing the fresh, pure air your Airvantage or Airvantage Plus flows into your atmosphere with these HEPA and Carbon Replacement Pre-Filters from Oreck.