The SereneLife Air Purifier Replacement Filters are designed to maintain the performance of your SLARP1076WT and SLARP1076BK air purifiers. Featuring a multi-layer filtration system, these filters include a primary filter, a HEPA filter, and an activated carbon mesh, which work together to trap allergens, dust, smoke, and other particles, ensuring clean and fresh air. To keep your air purifier running at its best, it is recommended to replace the filters every 3-6 months. This 2-pack set ensures you have a spare filter ready for replacement, helping to maintain air quality in your home or office.