1. Device (1) for removing solid and / or liquid, contained in a gaseous medium, with a filter arrangement (13), with a motor driven for generating a stream of gaseous medium through the apparatus the filter arrangement (13) and a housing (2), wherein the filter arrangement (13) and the device for generating the stream of gaseous medium are installed, wherein the housing (2) is as a module (20) with the filter arrangement (13) installed and apparatus installed for generating a gas stream, and that there are provided at least two modules (20).