Bosch Fleece Dust Bag for 9-Gallon Dust Extractors, 5-Pack is the fleece filter bag designed specifically for VAC series 9-gallon dust extractors. These filter bags serve as the primary filter, efficiently capturing large pieces of debris and helping to extend the life of the main filter. Using these fleece dust bags ensures the most effective way to collect and dispose of dust and debris. Each bag includes a port cover that securely closes the opening, preventing dust and debris from escaping during disposal. This convenient pack contains five dust bags, making it easy to maintain your dust extractor and keep your workspace clean. Model Number: