VEVA Premium True HEPA Replacement Filter Including 4 Activated Carbon Pre Filters Compatible with Air Purifier AC4300/AC4800/AC4900/AC4825 and FLT4825 Filter B PREMIUM QUALITY - True HEPA filters capture 99.97% off of dust and allergens as tiny as .3 microns to remove things like household dust, pet dander, mold spores, and pollens. Ideal for anyone who suffers from allergies or asthma. UNBEATABLE VALUE - Youll get one HEPA Filter along with 4 extra Activated Carbon Pre-Filters. Cheap enough so you can simply remove and replace each pre-filter after use to eliminate the hassle of cleaning or vacuuming. The pre-filters extend the life of the main HEPA filter and can be used up 6-8 months depending on use. FITS PERFECTLY - Compatible with Air Purifier Models AC4300BPTCA, AC4900CA, AC4825, AC4850PT, FLT4825 Filter B, AP2200CA and BXAP148. We include step-by-step instructions for quick and easy installation every time. 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. SAY GOODBYE TO ODOR - Activated Charcoal filters helps reduce common odors from pets, smoking and cooking. This value pack will last for the whole year to maximize your air purifier in your home. No more nasty smells in the house to improve the indoor air quality. 100% MONEY-BACK GUARANTEE - Feel the difference in the air or your money back, no questions asked. Just a prompt, courteous refund. At VEVA Advanced Filters, we want to ensure you are breathing easy in comfort and safety of your home.