Hoover Y/Z Vacuum Bags by Rug Doctor, Two Replacement Bags Include Micro Filtration Finer Liner trapping 99% of Particles Two Rug Doctor Hoover Y/Z Vacuum replacement bags designed to fit the Hoover Y/Z vacuum MicroFiltration and a Finer Liner filters out 99% of particles with a 2 ply-bag design Bag filters out grass, ragweed pollen, household fibers, dust and other allergens Powerful tool essential for everyday cleaning and deep cleaning high-traffics areas Easy to change vacuum bags, simply refer to your Hoover owners manual for bag installation instructions