Compatible Models: Perfectly fits Riccar R25 Series R25S, R25D, R25P upright vacuum cleaners. Replaces Riccar #R25HC-6. (Please check your model carefully) Fewer Bag Changes: Adopts 5 layers of filtration to utilize the bag volume, which means trapping more dust and fewer changes over time. The spunbond outer layer traps large debris, sawdust, and hair. The HEPA inner layer traps 99.97% of microscopic particles. Easy to Install Upright Vacuum Cleaners: Feature a sturdy self-sealing collar. They are designed to keep dirt, dust, and debris trapped inside the bag, even when changing it. For a clean working environment and dust-free disposal. Improve Cleaning Performance: Clean with less effort and time, especially in a large area. Keep the vacuum cleaner clean and reduce dust clogging, thus protecting the vacuum cleaner motor well. Breathe cleaner air at home, office and workplace. Value Pack: 8 pack replacement for Riccar vacuum cleaners. Capacity can hold up to 1-2 months of dust.