We offer discount for large quantity. Welcome to contact with us! PACKAGE CONTAINS: 2 HEPA filters and 8 extra Activated Carbon Pre-Filters. Offer a good way to enjoy a healthier and happier life.FLT4825 REPLACEMENT FILTER FOR AIR PURIFIER MODELS: GermGuardian Air Purifier AC4825 AC4300 AC4800 AC4900 AC4850.Perfect REPLACEMENT: Filter captures up to 99.97% of allergens as small as 0.3 Micrometres such as smoke, dust, pollen, pet dander, and other allergens.FILTER TIPS: To maintain maximum filtering performance, the filter should be replaced once or twice per year (Depending on use and local air quality, or when performance starts to deteriorate).Colour:BlackMaterial:plasticPackage Contents:2 * filters8 * Activated Carbon Pre-FiltersOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm