Cartridge Filter For Vacuum Type Shop Vacuum Fits Vacuum Brand Fein Fits Vacuum Models 9-20-27 9-20-28 Filter Pickup Type Wet/Dry Filtration Type Standard Filter Efficiency 99.9 Percent at 1 micron Filter Material Paper Filter Reusability Non-Reusable Height 2 1/4 in Length 9 3/8 in Width/Diameter 5 1/4 in