Meaco Dry Arete 20L/25L Spare H13 Hepa Filters (Pack of 3)Description The H13 HEPA filter provides an enhanced air cleaning capability of your dehumidifier, turning your unit into a combined dehumidifier and air purifier. The H13 HEPA is used in addition to the prefilter that comes as standard in the dehumidifier, so that you can get two stages of filtration. The HEPA filter can help remove mould spores, pollen, dust, pet dander, dust mites and more from the air. This is a H13 HEPA filter which means that