PERFECT COMPATIBILITY Fully compatible with AC5250PT, AC5000, AC5000E, AC5350B, AC5350BCA, AC5350W, AC5300B, CDAP5500BCA, CDAP5500WSP, PureGuardian Model AP2800CA, black + decker model bxap040, bxap250, and Lowe s idylis model IAP gg 125, please confirm your models before purchase HEPA Material Made of HEPA filter, which can effectively attach 99.97% of airborne particles as small as 0.3 microns in size, such as dust, hair, dander, lint, automatically improving indoor air quality better Full of Activated Carbon Comes with activated carbon pre-fil t-ers are made of high efficiency activated carbon and sponge, which can help attach large pariticles and absorb unpleasant odors coming from pets, smoke, cooking and wildfire PREMIUM QUALITY Made of premium non-woven fabric and activated carbon, both adopt advanced lower energy consumption and lower density structure technology verified by the manufacturer, with higher efficiency and less pressure to ensure maximum filtration, energy saving and a longer service life REPLACE REGULARLY It is recommend to replace every 6-8 months for optimal performance depend upon your usage and environment. Easy to install, no tools required. Brings convenience and comfort to your life. Filter made of FSC-Certified paper.