Kirby Generation 3, 4, 5, 6, Ultimate G and Sentria HEPA Bags 6 Pack Disposable Kirby vacuum bags Traps 99.97% of particles as small as .1 microns Rated HEPA 11  one of the industry's highest ratings for vacuum bag filtration Easy to install and remove Fits Generation 3, G4, G5, G6, Ultimate G series, Ultimate G series Diamond Edition and Sentria Kirby models