Heaven Fresh HF 20 Air Purifier for Kitchen and Small Areas -  Color Pearl White The HF 20 with its innovative and compact design features cordless electrical plug. It enables close fit to the wall without occupying unnecessary spaces. Long life LED that provides enough light to a small space enables HF 20 to be an ideal electric appliance for households. Negative ions force particles as small as 0.01 micron from the air. They can also neutralize airborne viruses and microorganism as well. The HF 20s uniquely designed metal dust collection plates produces static electricity to absorb airborne dust, pollen, mold spores, pet dander and cigarette smoke near around. The HF 20 features virtually silent operation.