General description These 4 Pack Replacement HEPA Filters are designed for Moosoo K12, K12 Pro, K13 Cordless Vacuum Cleaners, as well as Genius Invictus One 1.0 X7 / 2.0 and Foxnovo 13KPA Handheld Vacuum models. They effectively block 99.97% of dirt, dust, wood chips, pet dander, and other particles as small as 0.3 microns, helping to reduce allergens in the air. Technical specifications Filter type: HEPA Particle size filtration: 0.3 microns Package Contents: 4 x Filters Installation Installation is straightforward: disassemble the dust container, twist and remove the old filter, and replace it with a new one. Usage For optimal performance, it is recommended to wash and reuse the K12 filter and replace it every 2-3 months as part of regular maintenance.