Cartridge Filter, For Vacuum Type Shop Vacuum, Fits Vacuum Brand Nilfisk, Fits Vacuum Models ATTIX 33, ATTIX 33 M-H, ATTIX 44, ATTIX 44 M-H, VHS 40, VHS 42 M-H, Filter Pickup Type Dry, Filtration Type HEPA, Filter Efficiency 99.97 Percent at 0.3...