instecho The Sharper Image EVSI-XSFL Brethe Air Cleaner Replacement Filter Replacement Filter Compatible with Sharper Image breathe Air Cleaner, model EVSI-XS01 Cleanable, replaceable - lasts up to 18 months 99% Effective at removing airborne contaminants like allergens, smoke, pollen, dust and germs 5x Better than HEPA at removing microscopic contaminants down to 0.05 microns in size Reduces airborne viruses and bacteria