Features: *Compatibility:Designed for Dirt Devil 3-in-1 Bagless Vacuum Stick Models SD20020, SD20020FDI, SD20020PLFDI, SD20020TEFDI, ensuring efficient and effective cleaning performance. *Applicable Part Numbers:Used for F77, 440003993, RO-440003993.Compatible with multiple part numbers, making it easy to find the right filter for your vacuum cleaner. *Package Included:You will receive 4 pieces of filters, providing a long-lasting supply and ensuring continuous filtration. For optimal performance, replace filters at least every 2 to 5 months. *Good Material:Made of high-strength materials.Constructed with materials that effectively capture dust, hair, lint, and other airborne particles, improving indoor air quality and keeping your room clean. *Washable and Reusable:The filters can be easily washed and reused, offering extended usage and cost savings. Make sure to air dry them completely before reusing. Specifications: *Product Name:Replacement Vacuum Filter *Material:Fabric+Plastic *Size:No *Color:Black *Fitment:For Dirt Devil 3 in 1 Bagless Vacuum Stick Models SD20020, SD20020FDI, SD20020PLFDI, SD20020TEFDI *Number of Pieces:4 Package Content: 4 * Filters Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. High quality assurance: Each product undergoes strict quality testing to ensure that you can provide the best quality experience. User-friendly design: The product features and appearance are carefully designed, easy to operate, and suitable for various usage scenarios. Multifunctional practicality: It has a variety of practical functions to meet your diverse needs and improve the quality of life. Environmentally friendly materials: Made of environmentally friendly and safe materials, harmless to the human body, while paying attention to environmental protection. Excellent cost performance: Provide excellent quality at a reasonable price to ensure a shopping experience that is worth the money.