Shop-vac 90304 Cartridge Filter
This filter does what it's supposed to do. It's easy to install and is a convenient and effective alternative to using separate filters for wet and dry jobs. While I've heard some complaints that the old wet filters were easier to clean, I haven't found this to be an issue.Make sure this cartridge will fit your particular Shop-Vac model. According to the manufacturer, it does not fit the following models: 1x1, BullDog Portable, Mighty Mini, Hippo, Hang Up Vacs or AllAround Series.--Josh DettweilerWhat's in the BoxCartridge filter, retaining lid