High-Efficiency Filtration: Constructed from superior filter materials with multiple folds, this filter kit offers a robust composite structure that ensures high efficiency. It captures fine particles effectively, preventing secondary pollution and maintaining indoor air quality. Enhanced Pre-Filter System: Equipped with filters, this kit effectively blocks larger dust particles before they reach the HEPA filter. This not only preserves the condition of the HEPA filter but also extends its lifespan, ensuring long-lasting use and reliability. Reusable and Easy Maintenance: Both the HEPA filter and pre-filters in this kit are washable and reusable. For optimal performance, wash the filters monthly and replace them every 3-6 months. This maintenance routine is simple yet effective in extending the life of your vacuum. Colour:As Shown Material:Plastic Package Contents: 4* Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.