Professional Series Vac Bags. 99% Micro Filtration. Provides up to 40% Increased Airflow. Janitized Vacuum Bags for Numatic N.A.C.E., Henry/James/Hound and 200 Series Vacuums which include 200, 225, 235, 250, 252 and 260 Vacuums. Replaces Numatic Part #604100 / NVM 1C/2. These are packed 10 per pack.