Dewalt dwv902m m class next generation dust extractor 1400w 110230v dewalt dwv902m lx this 110v dust extractor from dewalt is an innovative dual filter cleaning system that maintains performance during tough construction applications it ensures constant suction power even with the finest concrete and wood dust each filter is automatically cleaned every 15 seconds reducing filter clogging and delivering constant air flow an audible alarm alerts the user if a drop in performance occurs