Convenient update Package – created to help vac140-series dust extractor users move toward compliance with the OSHA Regulations Works with Bosch PRO+GUARD dust solutions – an end-to-end dust-collection system that helps users move toward OSHA Silica Table 1 dust compliance HEPA filter – captures 99.97% of particles larger than 0.3 microns HEPA filter’s enhanced low-stick surface – improves the filter-cleaning process Fleece dust filter bag design – works as a preliminary filter and a secure way to capture debris and dust to increase the life of the main filter