- Compatible Models: The 400 True HEPA Replacement Filter is designed specifically for the 400 Air Purifier, ensuring optimal performance and quality equivalent to the original filter. - 3-in-1 Filtration System: This replacement filter features a robust 3-stage filtration system made from eco-friendly non-woven fabric and activated carbon. It includes a fine nylon primary filter, a high-efficiency HP 14-stage filter, and an activated carbon filter for comprehensive air purification. - High-Efficiency Filtration: - Level 1: Captures large particles like pet dander, hair, and lint, extending the filter's lifespan. - Level 2: Removes 99.99% of airborne particles as small as 0.1 microns, including household dust and pollen. - Level 3: Effectively absorbs unpleasant odors such as smoke, cooking smells, and pet odors, significantly improving indoor air quality. - Recommended Service Life: For optimal performance, replace the filter every 3-6 months. Frequency may vary based on local air quality and usage patterns, ensuring effective filtration and purification. - Quality Assurance: Each filter undergoes rigorous quality inspection to guarantee reliability and performance. Applications: 1. Perfect for homes with pets, capturing pet dander and odors for a fresher environment. 2. Ideal for allergy sufferers, effectively filtering out dust, pollen, and other allergens. 3. Great for kitchens, eliminating cooking odors and ensuring clean air during meal preparation.