Festool 452971 CT 33 Filter Bags, 5-Pack are replaceable paper filter bags designed specifically for the Festool CT 33 Dust Extractor. These filter bags capture and contain up to 7.9 gallons of dust and debris, helping you maintain a cleaner workspace and work more efficiently. They the cleanest and fastest way to contain dust and dispose of it completely. Acting as the primary or first stage filter, Festool filter bags trap particles down to 5 microns in size. Made with a double layer of tear-resistant material and featuring a cap that seals tightly for easy disposal, these filter bags ensure optimum performance and convenience. By preventing dust from reaching the main filter of the dust extractor, they significantly extend the life of both the main filter and the dust extractor itself. Designed to trap small particles while maximizing airflow, these bags allow you to reach full capacity without clogging or caking. Each pack includes five replaceable filter bags. Model Number: 452971