This filter is superior to the standard filter that comes with ShopVac. My previous filter was constantly clogged and still let in dust particles, which is unacceptable in terms of air quality in my shop. I bought this filter hoping that it would provide a better filter and also not limit the ShopVac's suction power. When I hooked up my ShopVac equipped with an Ultra Web cartridge and dust replacement, the difference was incredible. I mainly use it in my workshop for cutting wood, so it's great for picking up sawdust. Note: Without a dust collector like Dust Substitute, the filter will always clog, but it still outperforms the original ShopVac filter.