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Extend Your HEPA Filter's Performance
These high-quality carbon impregnated pre-filters serve as the critical first defense in your PM-400 air purification system. By effectively capturing larger airborne particles such as dust, lint, and pet dander, these pre-filters maximize the efficiency and lifespan of your main HEPA filter.
Maintenance Recommendation:
Compatible exclusively with the MiracleAir PM-400 Portable HEPA Air Purifier
Each package contains 3 replacement pre-filters—everything you need for a full year of clean air protection.