The filter is at the core of purifying your air and replacing it is essential for optimal air purifier performance. The dual-sided filters are comprised of a True HEPA filter with highly efficient Activated Carbon honeycomb granules and a durable mesh pre-filter. The True HEPA filter helps capture viruses and bacteria, including 99.99% of airborne coronavirus (SARS-CoV-2) in your indoor space.* Activated Carbon breaks down volatile organic compounds (VOCs) and odours. *Results from independent third-party testing using aerosolised airborne concentration of human coronavirus 229E over a two-hour period in a sealed 30m3 test chamber. HCoV-229E is a well-established surrogate for SARS-CoV-2 (the virus that causes COVID-19). The Activated Carbon Filter captures volatile organic compounds (VOCs). The Durable Mesh Pre-filter captures larger particles such as dust. The pre-filter can be hand washed in between filter replacements. For best results, replace the filter every 12 months depending on usage. Simply open the side panel filter doors for easy replacement. A change indicator light is displayed on the air purifier when the filter needs to be replaced. Pack includes 2 filters. Compatible with the TruSens Z-7000 Performance Series Air Purifier. Product Specification Use With Z-7000 Air Purifier Dimensions 3.0 x 35 x 61.1 cm Lifespan 12 Months Washable Yes - Prefilter only Date Indicator Undated Pack Quantity 2