- Compatibility : Our FLT4825 filter replacements are designed specifically for Guardian air purifiers, including models AC4825, AC4825E, AC4300BPTCA, AC4850PT, and AC4900CA. Note : These filters are not compatible with the AC5000 series or FLT5000 filters. - Extended Filter Life : Each pack includes 6 activated carbon pre-filters. Replacing your pre-filter regularly helps prolong the life of your HEPA filter while effectively reducing odors and volatile organic compounds (VOCs) from cooking, smoking, pets, and more. - High-Efficiency Filtration : Our filters feature H13 true HEPA technology, capturing 99.97% of airborne particles as small as 0.3 microns, ensuring a cleaner and healthier indoor environment. - Value Pack : This value pack comes with 3 true HEPA filters and 9 pre-filters, providing up to 18 months of air purification. Purchasing in bulk not only saves you money but also ensures ongoing access to fresh, clean air without the hassle of frequent shopping. - Practical Use Scenarios : - Ideal for homes with pets, reducing pet dander and odors. - Perfect for smoke-prone environments, efficiently filtering out smoke particles and smells. - Beneficial for allergy sufferers, significantly lowering airborne allergens for a more comfortable living space. Experience the benefits of superior air filtration with our FLT4825 filter replacements, ensuring your Guardian air purifier operates at its best for a healthier home.