Don't be fooled by other generic paper vacuum filter bags. Maximize your cleaning efficiency by using only genuine ProTeam filters. To safeguard the Indoor Air Quality of your facilities and to optimize the performance of your vacuum cleaner, change filters once they are half full. These filters are open collared, making them easy to empty and reuse several times. Fits QuietPro CN, RunningVac, ProVac CN canister vacuums and come in a pack of 10.