1Wide Compatibility: Replacement filter is suitable for HP00 HP01 HP02 HP03 DP01 DP02 air purifier to keep your air purifier working at a high level. 2Efficient: This filter adopts high efficiency particulate air filter efficient filtration technology, which can efficiently filter harmful substances in the air, including dust, pollen, lint, fibers, hair, and pet fur. 3Bad Smell Absorption: Activated carbon cotton absorbs unwanted smell and fume, such as smoke, cooking smells, and pet smell, as well as filtering volatile organic compounds, ideal for households with pets, cooking and smokers. 4Washable And Reusable Filters: Simply rinse with clean water and let them completely air dry before reusing them. The use of this filter can effectively improve indoor air quality, reduce the harm of air pollutants to the human body, and promote healthy life. 5Easy To Replace: You can easily install filters, no extra tools needed. It can be easily removed and replaced as part of normal maintenance.