- Compatible Models: This premium FLT4100 HEPA replacement filter is specifically designed for use with AC4100, AC4100CA, AC4150BL, AC4150PCA, and AC4150P Technologies Models. It replaces Part No. FLT4100 Filter E. Note: This is not an OEM product; brand names and model designations are used strictly for compatibility purposes. - H13 True HEPA Filtration: Our FLT4100 filters utilize H13 medical-grade true HEPA technology, effectively capturing 99.97% of airborne particles as small as 0.3 microns. This includes fine dust, pollen, pet dander, lint, hair, and fabric fibers, ensuring cleaner air in your home. - Enhanced Odor Control: The activated carbon filter included in our package helps to neutralize common household odors from pets, cooking, smoke, and wildfires. This feature not only provides a fresher environment but also contributes to extending the lifespan of the HEPA filter. - Cost-Effective Package: Each set contains 2 True HEPA Filters and 4 Pre-Cut Activated Carbon Filters. For optimal performance, we recommend replacing the HEPA filter every 3-6 months and the pre-filter every 2-3 months, depending on usage and environmental conditions. - Practical Applications: Ideal for families with pets, allergy sufferers, or anyone looking to improve indoor air quality. Whether you're cooking in the kitchen, dealing with pet dander in the living room, or managing allergens in your bedroom, these filters are designed to enhance your air quality effortlessly. - Reliable Performance: Count on our filters for consistent air purification and odor elimination, making your home a healthier place for you and your loved ones.