This Bosch Pleated HEPA Filter (VF120H) pairs with the either the VAC090A or VAC140A dust extractor to help move you toward compliance with the OSHA respirable crystalline silica dust regulation. When installed in a Bosch HEPA ready VAC series dust extractor, the filter/dust extractor unit has been independently tested to meet the EPA definition of a HEPA vacuum. You can use this filter for EPA lead-related Renovations Repair and Painting (RRP) rule compliant applications. The use of a fleece filter bag is highly recommended when using the VF120H. The filter bag may help prevent the HEPA filter from being directly exposed to abrasive materials and sharp objects that can be collected during normal use of a dust extractor. Please note that the VF120H is only for use in dry applications.