Filter, For Vacuum Type Shop Vacuum, Fits Vacuum Brand Nilfisk, Fits Vacuum Models AERO 21 / AERO 21 INOX, AERO 26, AERO 31 INOX, ATTIX 30, ATTIX 40 INOX, ATTIX 50, ATTIX 7, VL200, Filter Pickup Type Dry, Filtration Type , Filter Efficiency 99.97 Percent at 0.3 micron, Filter Material Paper, Filter Reusability Non-Reusable, Height 7 in, Length 7 1/4 in, Width/Diameter 7 1/4 in