What do you do if your vacuum cleaner isn't picking up dirt? Look for a full bag to determine if it is over half full. If you are using the Riccar Cannister 1100, buy these ultrafiltration paper vacuum bags. It is 6 times better than standard vacuum bags as it provides up to 99.7% filtration. Microscopic particles, germs, pollen spores and dust mites are no longer a hassle as they are all trapped in the inner bag lining of this bag. Show off the full beauty of your home by vacuuming regularly with your canister vacuum cleaning system from Riccar. Vacuum bags are made up of filter paper and they help trap dust particles and allow the air to pass through. As the pores of the bags begin to get clogged (when they get full), air does not pass as freely and this can drastically reduce the efficiency of your vacuum cleaning system. It is recommended that you keep checking the bag inside your vacuum cleaner to determine the right time to change it (generally when it is 30-50% full). Visit Govacuum.com for a wide variety of vacuum cleaner bags and other accessories including belts, filters and much more. We only stock quality replacement parts and supplies so you can be assured that you are receiving genuine vacuum cleaning parts when you order with us. Product Features: Made to fit Riccar 1100 canister vacuum cleaner Pack includes 6 bags Provides up to 99.7% filtration