Safely Collect and Dispose of Dangerous Concrete Dust Bartell Global's HD series dust extractors feature a two-stage filtering system with jet-pulse filter cleaning. Remove up to 99.97% of dangerous airborne particulates to keep your operators safe and your business compliant with environmental regulations. Two-stage filtering system comprised of one main conical filter, plus 1 HEPA filter Reverse-air jet-pulse filter cleaning system effectively cleans and removes dust build-up on the filters Easy to use inlet closure eliminates the need to remove hoses when pulsing and cleaning filters Easily connects to hand-operated power tools to extract concrete dust while cutting and grinding Equipped with a continuous-bag system for safe & easy disposal of concrete dust Comes with 15ft hose and floor wand