TN 611781 Professional Series Replacement Vac Bags. 99% Micro Filtration. Provides up to 40% Increased Airflow. Janitized Vacuum Bags for Nobles SpeedGleam, SpeedGleam Plus, BR2020 and BR2020T Vacuums, 10/pk. If multiple packs are ordered, we will bulk ship and reduce your freight charges during processing. Replaces Castex/Nobles/Tennant Part #611771 and 604237 These are packed 10 per pack.