Dewalt dwv901l wet dry dust extractor 30 litre 1400 watt 240 volt version the dewalt dwv901l compact wet dry dust extractor features an innovative dual filter cleaning system that maintains performance during tough applications the filter is automatically cleaned every 30 seconds reducing filter clogging and delivering a constant air flow it is l classified to meet eu legislation the vacuum offers constant suction power even with the finest concrete and wood dust it has a durable tank c