MPHELW-P339 Replacement Filter for HEAPETS P339 Air Purifier, 3-in-1, 2 Pack H13 True HEPA with High efficiency Activated carbon and 6 Pack Carbon Pre-Filter

["COMPATIBLE: MPHELW-P339 Replacement Filter for HEAPETS P339 Air Purifier.","Package Includes: 2 Pack H13 True HEPA with High efficiency Activated carbon and 6 Pack Carbon Pre-Filter.","3-IN-1 Filtration System: The H13 True HEPA filter is used in conjunction with a high-efficiency activated carbon and charcoal pre-filter.","Usage advice: The filter should be placed in a dry place. We recommend replacing the filter every 6-12 months and the pre-filter every 3-6 months.","Satisfactory service: Customer satisfaction is our priority. If you have any questions about your filter, please contact us. Our support team is always here to help."]