The IperJet DF filter unit consists of a pre-chamber, where most of the fumes and coarse dust are separated and settled in the first and second collection drawers. The subsequent labyrinth and filter section with high-efficiency Class M cartridges filter the air before it is released into the room. The high-efficiency fan, located at the top of the unit, ensures high suction capacity and low noise. The cartridges are cleaned by an automatic compressed air cleaning system.