Filter, For Vacuum Type Shop Vacuum, Fits Vacuum Brand Nilfisk, Fits Vacuum Models GM80, GM811, Filter Pickup Type Dry, Filtration Type , Filter Efficiency 99.97 Percent at 0.3 micron, Filter Material Paper, Filter Reusability Non-Reusable, Height 3 1/2 in, Length 6 in, Width/Diameter 6 in