The new Superjet-df equipped with horizontal cartridges is suitable for suction and filtration of welding fumes, fine and coarse dusts as well as of small quantities of chips, dusts/fumes from thermal cutting. The filter unit consists of one pre chamber, where the most dusts are sorted out, falling then in the first collecting bin. The following labyrinth together with the high efficiency filtering cartridges and the second collecting bin complete the filtration of the remaining dusts. The high performance fan, placed just on the top of the unit, assures a high suction capacity and a low noise level.