25 Replacement Filter for 25 Air Purifier S1/W1/B1, 3-in-1 H13 True HEPA Activated Carbon Filter

25 replacement filters exactly designed for MA Series 25 S1/W1/B1 models air purifier .The package includes 2 filters, and it's recommended to replace the filters every 3-4 months on both sides at the same time. | 25 replacement flters are made of 3-in-1 filtration systems including Nylon Pre-Filter, HEPA Filter, and Activated Carbon Filter. | The 25 HEPA filter are capable of attaching 99.9% of airborne particles as small as 0.3 microns, and the carbon filter helps you solve the problem of unpleasant odors and gases. | Package includes 2 filters. Fully meet your needs for the replacement of 25 filter, with premium materials and advanced technology, ideal solution for homes with pets, smokers, open layout kitchens. | We value customer service and satisfaction. If you have any problems with the filter fitting your air purifier, please contact us through our Amazon home page. Filter made of FSC-Certified paper