Review on VEVA HEPA and Carbon Filter Replacement Kit - 2 Pack HEPA Air Filters & 6 Carbon Pre-Filters - Fits Air Purifier Series AC5000, AC5250PT, AC5300B, AC5350W, AC5350B, CDAP5500B & AP2800CA by Kimberly Lee

They are better than the filters that come with the Germ Guardian air purifier. I've been using them for a year. I change them twice a year and the black pre-filter monthly. Highly recommended. I did NOT get them at a discount or for free and wasn't even asked to leave a review. I paid full price for these filters, read all the reviews and tried them. I only had the OEM filters that came with the Germ Guardian air purifier to compare. These are better.