Good quality: High-quality filter, sturdy and durable, with good filtering effect. Filtration: The filter can effectively capture allergens, small particles, and remove dust, mites, pollen, spores, most bacteria, and pet dander. Powerful function: The filter can filter dust, reduce dust damage to sensitive parts of the machine, and extend the life of the vacuum cleaner, helping the vacuum cleaner work efficiently and saving you money. Easy to use: Easy to install and disassemble, without any tools, can be rinsed with clean water, and can be reused after drying. It is recommended to replace the filter regularly. Compatibility: Professional vacuum cleaner accessories, suitable for Black & Decker DustBuster PVF110, PHV1210, PV1020L / PD11420L PHV1810.