Triple Purification: Hepa, pre-filter, and charcoal layers offer 3 levels of cleaning Breathe Easier: Purifies the air for easier breathing and more restful sleep Eliminate Allergens: Captures 99.97% of dust, pollen, pet dander, smoke, mold spores, and household odors Long-Lasting: Use up to 6 months for optimal performance Compatibility: Designed for use with Pure Enrichment's PureZone Air Purifier (sold separately)  Filter Type: Hepa Voice Activation: No Voltage (volts): 120v Measurements: 8.5 Height/Inches Country of Origin: Imported