HEPA air filter, removes at least 99.97% of airborne particles 0.3 microns or larger. perfect for removing pollen, small pet dander particles and dust from the air HEPA filters remove odors from indoor and office environment like smoke, fireplace fumes, VOCs, pet odors and kitchen odors Easy Replacement Filter: the filter is easy to be replaced and disposed without any tool required, ensuring you to replace your old filter in minutes We recommend replacing the filter every 3-6 months. Please remove the plastic package from the filter before using Material: HEPA filter paper colour: As shown Package Contents: 2 x filter Only the above package content, other products are not included. Note: Light reflection 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.