Oreck Standard Antimicrobial Filtration Bags - 25pk, AK1CC25 1 Layer of filtration traps 95% of particles at 5.0 microns or greater & antimicrobial coating on the paper reduces on-filter odor Extra-large capacity: holds up to 4x the amount of dust, dirt and debris of a typical bagless vacuum. For optimal performance, change filtration bag when maximum fill line is reached Compatible with the new Oreck ELEVATE Upright Vacuum Collection & all Oreck vacuums with docking systems. Only Oreck Certified Filtration Bags should be used with the Oreck vacuums to ensure optimal filtration & cleaning performance.