• Nispira True HEPA filter with preliminary filter and activated carbon filter compatible with Air Purifier Air400
• Compared to original part 2520 carbon filter and 2521 true HEPA filter
• Preliminary Filter to trap hair and pet dander. High quality HEPA filter capture 99.97% of airborne particles down to 0.3 microns. Activated carbon filter captures household odor and chemical VOCs
• Dimension: 1.3" x 13.7" x 16.06". Suggest replacing the filter set every 6 months the most to optimize the performance
• 100% customer satisfaction guaranteed. Quality meets or exceeds the leading brand

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