Guaranteed Compatibility: This filter is designed For 3930F, 3933, 3999z, 4017N, V2 series models, ensuring a and easy installation. Advanced Filtration Technology: These filters are engineered to maintain your vacuum's efficiency, reduce dust and allergen penetration, and improve the air quality in your home. Perfect for homes that require high air purity. Eco-Friendly and : Made from materials, these filters not only support environmental sustainability, but also your vacuum runs at optimal efficiency for longer. Basic Vacuum Cleaner Maintenance: Replacing old or filters is essential. These vacuum cleaner accessories help extend the life of your machine, ensuring it's like every time you use it. Optimize Performance with Regular Replacement: To maintain optimal performance, replace your filters every 2-3 months depending on usage. These filters are easy to remove and install, and are an important part of daily vacuum cleaner maintenance. Function:Consumables Use environment:Home use Color:As Shown Material:plastic Package Contents: 6 * 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.