About this item Breathe easier with these high-performance Replacement Air Purifier Filters by LifeSupplyUSA, specifically designed to be compatible with Bissell Air400 Series 24791. This 3-in-1 filtration system combines a Pre-Filter, True HEPA Filter, and Activated Carbon Filter to provide a comprehensive solution for your indoor air quality needs. The Medical Grade True HEPA filter is engineered to capture up to 99.97% of airborne particles as small as 0.3 microns, including dust, pollen, pet dander, and mold spores. The integrated Activated Carbon layer effectively adsorbs household odors from cooking, pets, and smoke, as well as harmful VOCs and chemicals. To ensure the longevity of the HEPA media, the built-in Pre-Filter traps larger particles like lint and hair. Constructed for durability and consistent operation, these filters help maintain peak performance and airflow for your air purifier. Installation is quick and tool-free, allowing for easy maintenance of a healthier home or office environment. We offer flexible pack size options to suit your long-term maintenance requirements. For optimal results, it is recommended to replace the filter every 6 to 12 months depending on air quality and usage. Choose a reliable and cost-effective air filtration solution with LifeSupplyUSA. FEATURES 2521 / 2520 Filter Replacement Compatible with Bissell Air400 Series 24791 – 3-in-1 True HEPA + Activated Carbon + Pre-Filter by LifeSupplyUSA (1-Pack) Excellent Value: Replacement filter set for air purifiers, effectively filters air particles for healthier living. Dimensions: 15.75" x 13.39" x 2.36" inches Compatibility: Compatible with Bissell 2521/2520 air400, series 24791. Not OEM; by LifeSupplyUSA. High-Quality Air Filtration: High-Efficiency Particulate Air (HEPA) design filters fine particles and irritants. Carbon extends HEPA filter life and removes larger particles. Also eliminates cooking odors and smoke for improved indoor air quality. Professional Grade: LifeSupplyUSA Air Purifier Filters are designed to be durable and efficient, ensuring maximum airflow and protecting your device.