Cartridge Filter, For Vacuum Type Critical Area Vacuum, Fits Vacuum Brand Atrix, Fits Vacuum Models Omega, Filter Pickup Type Dry, Filtration Type HEPA, Filter Efficiency 99.97 Percent at 0.3 micron, Filter Material Paper, Filter Reusability Non-Reusable, Height 11 3/4 in, Length 5 1/2 in, Width/Diameter 5 3/4 in