| http://www.w3.org/ns/prov#value | - The three-stage filtration system includes a carbon filter for odors, dust and other large particles, a HEPA-type filter that removes 99% of airborne contaminants as small as 0.3 microns, plus a titanium dioxide (TiO2) filter with ultraviolet-A light to kill mold, bacteria and viruses.
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