HEPA Filter Replacement for Shark BU3523 / BU3521 / BU3120 Cordless Stick Vacuum with Clean & Auto-Empty System

["Compatible Models: Fits Shark BU3523, BU3521, and BU3120 Cordless Stick Vacuums. Confirm your model for guaranteed compatibility.","Complete Filter Set for Handheld & Auto-Empty Vacuums: 2 Pre-Motor Filters, 2 Foam + 2 Felt Pre-Motor Assemblies, 2 HEPA Filters, 1 Cleaning Brush. Replaces XPRFIW1000, XFBU3000.","Washable & Reusable: Easy to rinse and reuse, saving costs. Replace every 2–3 months to maintain peak performance and prolong the life of your vacuum and Auto-Empty Dock.","Premium Material: Made with high-quality HEPA filter media for superior dust, pollen, and allergen reduction. Designed for use with vacuums and Auto-Empty Systems to maintain cleaner, fresher air at home.","Easy Installation & Maintenance: Tool-free filter replacement for vacuums and Auto-Empty Docks. Quick, convenient, and hassle-free for a smooth cleaning routine."]