The Philips FY0194/30 Air Purifier Nano Protect HEPA Filter helps remove airborne particles and supports cleaner indoor air. This Series-2 replacement filter is designed for compatible Philips air purifier models and uses a Nano Protect HEPA filtration layer to capture fine particles from the circulating air. As air passes through the purifier, the filter traps dust, pollen, pet dande... https://www.hnkparts.com/fy0194-30-series-2-nanoprotect-hepa-filter