The Bosch 14-gallon dust extractor with auto filter clean and HEPA Fflter provides a complete package that is designed to help users move toward compliance with the OSHA silica dust regulation. It delivers a maximum 150-cubic-feet-of-air-per-minute rate, with a sustainable 97 in. static water lift. The automatic on-board filter-cleaning system activates every 15 seconds to help maintain maximum suction power. The included HEPA filter captures 99.97% of particles at 0.3 microns and larger. The included fleece filter bag helps to protect the filter and provides the optimal containment of dry dust and debris.