There are 2 versions of DualGo units: The DualGo and the DualGoPlus. The difference are the extraction arms connected to the filter unit. The length of the arm can vary from 2 to 4 meters. The DualGo range is recommended when 2 coils of solid welding wire are consumed, or 15 kg of welding electrodes per month. Both units meet the requirements regarding welding fume separation efficiency class W3, according to ISO standard 15012-1:2013.