... ESP air purifier no need to replace the filter, easy to clean product size:74.4*95 ... air purifier Feature: High electrostatic plate traps the dust, pollen, smoke etc, as small as 1 ... maintenance: just wipe the dirt down from the dust collector rod with a cleaning cloth.2, Releases high- ... -------Negative ions eliminate air borne contaminates such as dust,pollen,mold, smoke,pet dander,and bacteria,germs ...