The HEPA Wet+Dry Shop Vacuum (D1606) from Dustless Technologies captures 99.97% of particles at 0.3 microns. That is 0.00003 centimeters across, much smaller than the width of a human hair, a red blood cell, bacteria, pollen, and allergens. This fully certified HEPA Shop Vac is safe for silica, asbestos, lead paint, and hexavalent chromium removal and containment. The dustless HEPA filter is individually certified and serialized, meaning it's been laboratory tested to be compliant with OSHA and EPA laws for hazardous material containment. The large capacity barrel easily holds 40 pounds of dust. If you’re looking for a Wet+Dry Shop Vacuum with a HEPA filter than can get everything, this is it.