Perfect Compatibility: Compatible with Shark Clean & Empty lightweight cordless stick cleaner models; Fit for BU3523, BU3521, BU3120 Efficient Filtration: Filter replacement is made of high-toughness filter paper and ABS material, which can easily clean various stains and unpleasant odors on the floor and capture tiny particles such as pollen and pet hair Washable and Reusable: Replacement only need regular cleaning to restore its effectiveness and can be reused after being completely dried. It is recommended to clean them every 2-3 weeks and replace them every 2-3 months to keep the vacuum cleaner working efficiently Easy Replacement and Installation: No tools are required to replace the filter. Simply remove the old filter from the vacuum cleaner device and replace it with a new one. Quick and convenient, making your cleaning tasks smoother Package Includes: 2 pcs hand-held vacuum motor pre-filters, 4 sets of automatic emptying system motor prefilter assemblies (4 foam filters and 4 felt filters), 2 pcs automatic emptying system HEPA filters, 1 pcs cleaning brush

Fitment:
Fit for BU3523, BU3521, BU3120 filter replacement parts
Fit for Shark BU3521 Clean Lightweight Cordless Upright Vacuum Cleaner
Fit for Shark BU3523 Clean and Empty Cordless Upright Vacuum Cleaner

Feactures:
1. Made of high-quality materials, corrosion-resistant and wear-resistant to ensure long-term stability
2. It can significantly improve the vacuuming effect, and the quiet operation sound and lightweight design also enhance the overall user experience
3. BU3523 Filter can capture tiny particles such as dust, pollen, and pet hair to improve the cleanliness of your home

Package Includes:
2 pcs hand-held vacuum motor pre-filters
4 sets of automatic emptying system motor prefilter assemblies (4 foam filters and 4 felt filters)
2 pcs automatic emptying system filters