ONLY compatible with AIRFIRE AP201 air purifier. Please confirm your air purifier model before ordering to avoid mismatched purchases. Package: 2 Pack H13 Grade True HEPA replacement filters. Material: Premium hospital-grade H13 True HEPA composite material. Filtration Performance: Captures 99.997% of airborne particles as tiny as 0.3 microns, including dust, pet dander, pollen, wildfire smoke and household odors. Design Feature: Tight leak-proof fit prevents air bypass; tool-free quick installation for fast replacement. Maintenance: Replace filters every 3 to 6 months based on usage and air quality to maintain stable purification performance. Whether you're combating seasonal allergens, wildfire smoke, or pet-related pollutants, these H13 HEPA filters deliver reliable, powerful purification. Enjoy cleaner, fresher air and peace of mind with a practical, long-lasting solution tailored to your AP201 air purifier.