Thanks to my knowledge gained in practice, I picked up these filters for my vacuum and I am so satisfied with its performance. The pre-motor air filtration system is exceptional in removing dust, dander, and other allergens leaving cleaner air in my home. The installation process was easy, and the filter is washable and reusable.The only downside is that it needs frequent cleaning for MAXIMUM effectiveness. Overall, I highly recommend this product for anyone looking to improve their indoor air quality..