Sleeve Filter, For Vacuum Type Shop Vacuum, Fits Vacuum Brand Nilfisk, Fits Vacuum Models GM80, GM811, Filter Pickup Type Dry, Filtration Type Standard, Filter Efficiency 99.5 Percent at 2 micron, Filter Material Cloth, Filter Reusability Reusable, Height 2 in, Length 5 1/2 in, Width/Diameter 5 1/4 in