Efficient purification: The purification power of the old filter decreases after the adsorption of pollutants is saturated, and the replacement of the filter can ensure that the air purifier can continue to remove dust efficiently, making the indoor air cleaner. Protect the machine: The old filter will block the air circulation, increase the load on the fan, and increase the power consumption, and replace the filter regularly to make the components function normally and prolong the life of the machine. Eliminate odors: Old filters are prone to dirt and odors, and replacing the filter can keep the air fresh and create a comfortable environment. Reduced risk: Contaminants from old filters may be released twice, and replacing the filter can reduce the risk. Compatible for Sharp，FZ-Y80MF/FZ-A60MFE/FZ-A61MFR KC-Z380SW KC-D40/50/60 KC-Z200SW