These are 10 genuine Pro-Team commercial backpack vacuum cleaner bags for the following ProTeam vacuum models; Super QuarterVac, QuarterVac, ProVac, TailVac, QuietPro BP, and GoCart Vac. These Intercept Micro Filter bags are the first of four level filtration systems on the ProTeam vacuums. The inner micro filter of the bag captures the microscopic particles that standard single ply bags would allow to escape.