Sleeve Filter, For Vacuum Type Shop Vacuum, Fits Vacuum Brand Nilfisk, Fits Vacuum Models 127, 137, 3306, 3308, 3508, 3508W, 3SL, 5SL, 5WSL, A17, S2, S3, T26, T26+, T48, T48+, T63, VHC200, Filter Pickup Type Wet/Dry, Filtration Type Standard, Filter Efficiency 99.1 Percent at 1.5 micron, Filter Material Cloth, Filter Reusability Reusable, Height 12 1/4 in, Length 18 1/4 in, Width/Diameter 18 1/4 in