The Deerma ZQ990W vacuum cleaner filter effectively traps dust particles and dirt. It has filtration level F9 and is made of PET. It is also RoHS certified. To extend the life of the product, we recommend cleaning it regularly. Remove dust from it after every 3-4 uses and after 5-6 uses, wash it thoroughly and then dry it before using it again. To ensure effective filtration, change the filter at least once every 3 months.
