end with the aperture 50 which forms the outlet from the housing 48 the space between the lower part 61 and the upper part 62 defines a cavity for housing the filter 70 the upper part 62 has an outlet branch 63 which mates in an airtight manner with the lower end of the exhaust duct 90 a plurality of vanes 65 a 65 b 65 c are located in the airflow passage two of the vanes 65 a 65 b extend from the aperture 50 and into the area of the airflow passage which lies adjacent the cavity for receiving the filter 70 in this area the vanes 65 a 65 b extend from the lower part 61 towards the upper part 62 so that they lie adjacent or even contact the filter 70 a third vane 65 c extends from the aperture 50 towards the area of the airflow passage which lies adjacent the cavity for receiving the filter 70 but terminates immediately before the said area three separate ducts 51 52 53 are formed between the vanes 65 a 65 b 65 c the vanes 65 a 65 b 65 c serve to guide the airflow passing through the vacuum cleaner 10 to and from the filter 70 the vanes 65 a 65 b 65 c extend from the outlet 50 of the motor housing 48 along the lower surface of part 61 the vanes 65 a 65 b continue beneath the area where filter 70 is located the vanes 65 a 65 b 65 c have two uses firstly they serve to distribute airflow across the surface of the filter 70 in a reasonably uniform manner and secondly their non linear shape serves.