Key Features

• Compatible Models: This detect filter replacement is perfect fit for shark clean lightweight cordless cleaner BU3523, BU3521, BU3120. Compare to part # XPRFIW1000 & XFBU3000. Please confirm the filter model you need before placing an order, so as not to buy the wrong one.
• Premium Material: Made of high-quality materials, this filter is built to last. Can capture over 99.97% of dander, and hair with filtration. Covering tiny particles down to 0.3 microns. Works together to help your bu3521 lightweight cordless stick vacuum cleaner work better, and keep your room clean and comfortable. Improve the surrounding air quality and protect your health.
• Washable & Reusable: The bu3521 filter for shark are washable and reusable. Can be rinsed under a stream of water to remove dirt from the surface. Make sure the filter is completely dry before use. For optimal performance, it is recommended to change this filter set once every 1-3 months.
• Package Includes: 3 handheld pre-motor filters, 3 Auto-empty system pre-motor filters, 3 auto-empty system HEPA filters, 1 cleaning brush. Our filter set is the best-valued pack which lasts you 6 months, thus saving you more time and hassle, Our filters are effective, easy to use and clean, you will love them.
• Our Service: We are committed to providing you satisfied service. You will get reply within 24 hours and will help you solve the problem ASAP for you, if you have any questions about this filter replacement, please don't hesitate to contact us.

Specifications