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. The open-collared design makes emptying and reusing this filter easy and the dual-layered construction of prevents captured particulates from escaping the vacuum and disrupting the air quality within your workplace. Fits ProTeam GoFit 3 backpack vacuums and comes in a pack of 10.