The Electrolux CLEAN360 HEPA 13 Filter is a high-efficiency replacement filter designed for compatible Electrolux air purifiers, such as the PA91-404 series. It features advanced multi-layer filtration technology that captures up to 99.97% of fine particles, including dust, pollen, PM2.5, and airborne allergens. The filter also includes an activated carbon layer to help reduce household odors and harmful gases, while its antibacterial treatment helps limit the spread of airborne bacteria. An integrated smart tracking system indicates filter usage and remaining lifespan, ensuring optimal performance at all times.