NISPIRA Replacement True HEPA Filter Compatible with Germs Guardian AC5000 Series Air Purifiers, 2 Filters Pre-filter and true hepa filter combination that captures 99.97% of allergens Charcoal filter helps reduce household odors Long-lasting filter needs to be replaced every 6-8 months Dimension 4.8 x 1.8 x 19.2 inches Quality meets or exceeds leading national brand