Type-CC1 HEPA bags trap 99.97 percent of dust and pollens down to 0.3 microns for cleaner air in your office. Easy-to-install design goes on and removes quickly for time-saving replacement. Disposable material allows you to conveniently discard filled bags for time-saving replacement. Replacement bags are designed for Hoover HushTone Vacuum Cleaners (sold separately).Type-CC1 HEPA bags trap 99.97 percent of dust and pollens down to 0.3 microns for cleaner air in your office. Easy-to-install design goes on and removes quickly for time-saving replacement. Disposable material allows you to conveniently discard filled bags for time-saving replacement. Replacement bags are designed for Hoover HushTone Vacuum Cleaners (sold separately).