Support Dropshipping and Wholesaling.100% Original and Good Quality with Free After-sale Warranty.Multiple levels of cleaning include HEPA, Pre-Filter and a Charcoal layer to help improve indoor air qualityTrue HEPA Filter captures 99.97% of dust and allergens as small as .3 Micrometres such as household dust, pet dander and plant pollens.Charcoal filter reduces common odors from pets, smoking and cooking.Replacement filter for GermGuardian Air Purifier Model AC4100Only one single combination filter needs to be replaced every 6-8 months depending on the use of the product.Colour: blackMaterial: filter paper + filter cottonPackage Contents:4 x filters4 x carbon cottonOnly 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