Compatibility: The HEPA H13 replacement filter ME-40 is compatible with MA-40 air purifiers, including models MA-40A and MA-40B. Our high-quality replacement filter ensures your air purifier operates at peak performance. Helps maintain clean air in homes, apartments, schools, or offices. Easy to replace: Designed for simple installation, allowing you and your family to quickly restore fresh, healthy air in any room. Includes a freshener filter to help reduce irritants and neutralize odors. HEPA H13 filter: Captures 99.9% of airborne particles, including smoke, pet dander, dust, and odors. Efficiently traps particles as small as 0.3 microns, offering superior filtration compared to HEPA H11. Ideal for households with pets, smokers, or cooking odors. Three-stage filtration: Features a true HEPA filter to capture fine particles, an activated carbon layer to reduce household odors, and a pre-filter that traps larger particles like hair and pet fur. Keeps indoor air fresh and clean. Replace every 6 to 8 months for optimal performance. Using expired or worn filters may reduce air purifier efficiency. Color: As shown in picture Material: Composite material Package Contents: 2 x Air Purifier Filters Note: Light reflection and differences in display screens may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.