Abstract: A cabin for an electrostatic powder coating installation comprising a filter communicating with an internal compartment or space of the cabin, the side of the filter facing away from such internal compartment being exposed to the action of a negative pressure. A cleaning device is operatively associated with the filter. The cleaning device and the filter are relatively movable with respect to one another. The filter is constructed as a rotatable filter drum arranged in a chamber bounding and connected with the internal compartment of the cabin. There also is provided a stationary suction nozzle spanning the filter drum along a generatrix or surface line, and the suction nozzle is connected via a separator with a suction blower.