2-STAGE AIR PURIFICATION: Stage 1: Carbon Activated Pre-filter; Stage 2: True HEPA filter CAPTURE + ELIMINATE HARMFUL PARTICLES: Our genuine filter cleans your air from 99.97% of particles as small as 0.3 microns like dust, pollen, pet dander, smoke, and household odors BREATHE EASIER: Only Pure Enrichment True HEPA filters improve air quality by helping to reduce allergens and improve sleep quality LONG-LASTING: For optimal performance and to maintain the integrity of your air purifier, change your PureZone 2-in-1 True HEPA filter every 6 months COMPATIBILITY: 2-in-1 air filter designed for the PureZone Elite 4-in1 Air Purifier (sold separately) Breathe in fresher air using the 2-in-1 True HEPA replacement filter from Pure Enrichment. Enjoy improved air quality as the premium 2-stage filter safely cleans the air in any home or office. Our filter is designed to work with the Pure Enrichment PureZone Elite 4-in-1 Air Purifier (sold separately). Each of the two layers of this filter provides a unique level of cleaning: Activated Carbon Pre-Filter– Captures and absorbs initial dust, allergen particles, formaldehyde, benzene, and other noxious gases. HEPA Filter–Captures dust, smoke, pollen, and other allergens. For optimal performance, we recommend replacing your unit's air filter every 6 months.