Genuine Levoit filter set fits the LSV-V201-WUS cordless vacuum for steady optimal performance. As part of its 5-stage filtration, it captures 99.9% of 0.3μm particles to avoid secondary pollution. This washable kit includes 4 pre-motor and 2 post-motor filters for up to one year’s use; replace pre-motor filters every 3 months and the post-motor filter yearly per the manual.