, high quality material, well made, and well matched to old equipment. 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 NO MORE MEASURING AND CUTTING - Measuring and cutting filters is time-consuming and potentially inaccurate. Now you can replace your dirty old filter in a matter of minutes! These are specially cut and designed to fit for HPA090, 094, 100, 104, 105, HA106 Air Purifiers. The activated carbon filter effectively filters harmful gases. Can electrostatically adsorb harmful gases and chemicals, such as formaldehyde, benzene, and volatile organic compounds. We recommend replacing the filter every 3-6 months. Please remove the plastic package from the filter before using<br><br>Colour:Black Material:Activated charcoal Size:Charcoal cotton size:27.5x19x0.5cm<br><br>Package Contents: 6 * charcoal cotton<br><br>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.