Festool 452970 Replacement Filter Bags For CT 22 Dust Extractor, 5-Pack Filter bag captures and contains dust and debris, helping you work cleaner and more efficiently Integrated cap forms a tight seal during bag removal and disposal, keeping the dust contained and off the floor Traps particles down to 5 microns in size, extending the life of both the main filter and dust extractor Designed to trap small particles while maximizing airflow, so you can reach full capacity without clogging or caking Includes 5 replaceable filter bags