This replacement filter is designed to perfectly fit the Instant Air Purifier, small size. It’s easy to install, so replacing the filter regularly isn’t a chore. It’s part of an advanced 3-in-1 filtration system designed so you inhale cleaner air, and exhale peace of mind.    Easy-to-install replacement filter for Instant Air Purifier, small size (AP100)  When installed in Instant Air Purifier, works to remove 99.9% of bacteria, virus and mold from treated air1  Advanced 3-in-1 filtration system: HEPA-13 filter captures 99.97% of dust, dander, pollen, allergens and other ultrafine impurities in the air; carbon layer in the filter helps reduce odors;  antimicrobial coating prevents bacterial growth on the filter and protects it against degradation  Estimated to last 6–8 months when used continuously in Auto Mode  Office/Den size for up to 126 sq ft / 11.7 sqm   1) Performance claims are calculated based on testing of a single particulate, A. Niger (mold) E. Coli (bacteria), S. Epidermidis (bacteria) or Phi-X174 (virus), under laboratory conditions following 1 hour of air purifier operation at the maximum fan speed and with plasma ion technology on.  Actual results may vary, depending on usage environment (temperature, humidity, room size and shape, nature and number of particulates in air, etc.), placement of the unit, and product usage (operation duration, operation mode, etc.). Best results with continuous use. Features: Adjustable Voice Activation: No Country of Origin: Imported