General description The 10PCS Vacuum Dust Bag is designed for J20, W20, and W20 PRO models. Made from melt-blown and non-woven fabric, these dust bags effectively capture 99.7% of ultra-fine dust particles down to 0.3 microns. The auto-lock feature ensures that the dust bag seals completely when lifted, preventing dust and dirt from escaping. Technical specifications Model Number: For W20/W20 PRO, For J20 Material: Non-woven fabrics Color: White Package Contents: 10 Dust Bags Measurement allowed error: +/- 1-3 cm Usage To maintain optimal performance, clean and replace the dust bag regularly. For allergy sufferers and pet owners, it is recommended to replace the dust bag every 2-3 weeks. The dust bag's large capacity allows for more dust collection, reducing the frequency of replacements. Easy to replace without the need for special tools or professional skills.