VACUSHOP FLT4825 True HEPA Replacement Filter B Compatible with Germ Guardian Air Purifier AC4825, AC4825E,AC4300BPTCA,AC4850PT,AC4900CA package includes： 2 HEPA + 2 Carbon Filters Compatible with Guardian air purifier models: FLT4825 Filter B, AC4300bptca, AC4900ca, AC4825, AC4825dlx, AC4850pt, cdap4500bca, cdap4500wca, AC4820, Pureguardian model ap2200ca and blACk + decker bxap148 Compatible with Guardian Air Purifier Models AC4300BPTCA, AC4900CA, AC4825, AC4850PT, PureGuardian Model AP2200CA and Black+Decker BXAP148 Filter B, Compatible with Germguardian FLT4825 HEPA Filter Dimensions: H: 15.75” x L: 4.72” x W 1.1” and Pre-Filter Dimensions: H: 15.75” x L: 4.72” x W 0.2”. Activated Charcoal filters helps filters pets, smoking and cooking. This value pack will to maximize the performance of your air purifier. No more unpleasant smells in the house to improves the indoor air quality.HEPA filters can large and airborne particles, including dust, common pollutants, etc You’ll get 2 HEPA Filters along with 2 extra Activated Carbon Pre-Filters. The pre-filters extend the life of the main HEPA filter and can be used up 6-8 months depending on use.