2 Set MA-25 H13 True HEPA Replacement Filter for MA-25 B1/S1/W1 Air Purifier, 3-in-1 True HEPA, Activated Carbon and Pre-Filter for Wildfire Smoke, Dust, Odors, Pollen, Pet Dander

Key features

• PERFECT FIT: Compatible with MA-25 B1/S1/W1 Air Purifier. These replacement filters are the same excellent performance and perfect fit as the original.
• HIGH-EFFICIENCY: MA-25 Filters are made of 3-in-1 filtration systems including Nylon Pre-Filter, H13 Medical Grade True HEPA Filter, and Activated Carbon Filter.
• TRUE HEPA: H13 Medical Grade MA-25 True HEPA Filter helps up to 99.97% of particles as tiny as 0.1 microns.
• ACTIVATED CARBON: The high-grade activated carbon filters can efficiently odors and fume, such as smoke, cooking smells, and pet odors.
• CUSTOMER SERVICE: The package includes 4 ma-25 replacement filters（2 set） and it is recommended to replace the filter every 3-4 months or 2,500 hours. If you have any problems with the filter fitting your air purifier, please contact us through our Amazon home page.