CleanMax Standard and Pro-Series Micron HEPA 3-Ply Janitized Vacuum Cleaner Bags fits CleanMax Standard Series CMS-1N & CMS-1T and CleanMax Pro-Series CMPS-1N, CMPS-1T, CMPS-QD & CMPS-QDZ. Janitized Plus Vacuum Cleaner Bags have a 99% micro-filtration rating and are 46% stronger than OEM 2-Ply filter bags providing a 40% increase in airflow. 1 filter each.