1. Main materials: The product is made of 100% high-quality and environmentally friendly materials, which are soft and durable. 2. Installation and disassembly: It is easy to install and disassemble without additional effort and time. 3. Replacement effect: Frequent replacement of the filter can effectively extend the service life of the machine with significant results. 4. Cleaning function: It is easy to clean, which helps to remove dirt, dust and debris on the floor. 5. Applicable models: It is suitable for models such as HSV320J, HSV420J, HSV520J, HSV320J32, HSV420J42, HSV520J01, SVA420B, SVA520B, SVF11 of Black & Decker. 6. Color: As shown in the picture. 7. Material: Plastic. 8. Package contents: It includes 8 high-efficiency particulate air (HEPA) filters. 9. Precautions: Only the above package contents are included, and other products are not included. Due to differences in light and monitors, the color of the items in the picture may be slightly different from the actual ones. The measurement error is allowed to be plus or minus 1 - 3 centimeters.