The compatible with Sharp FZK50HFU is a replacement True HEPA filter designed for Sharps FPK50UW Air Purifier. This True HEPA filter captures 99.97% of pollen, dust, pet dander, and smoke particles as small as 0.3 microns. Your purifier is only as powerful and effective as the filter you put inside, and compatible with Sharp's replacement parts are essential for maintaining product performance. Each compatible with Sharp air purifier filter is designed specifically for a particular unit style. Not only will genuine replacement parts fit like a glove, but they also have the sleek and seamless design to match so that you can get the most out of your compatible with Sharp air purifier. Replacement True HEPA filter designed for a compatible with Sharp HEPA Air Purifier with Plasmacluster Ion Technology for medium rooms (FPK50UW) True HEPA Filter captures 99.97% of pollen, dust, pet dander, and smoke particles as amall as 0.3 microns to help improve the air you breathe Filter captures larger particles from the air, including pet hair and dander, extending the life of the True HEPA filter Filters are properly sealed to protect lifetime usage Recommended replacement every 2 years