characterised by the mounting or arrangement of filters

Full Title

Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station > Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing > with means for purifying supplied air (perfuming or deodorising means F24F1/0355) > characterised by the mounting or arrangement of filters