An improved fan assembly is disclosed. The assembly includes: a housing (20)having a downwardly opening mouth (22) for drawing in air and a laterally openingexhaust air outlet (30)a top edge (32), a first side edge 34 and a second side edge(36), the edges around and adjacent to the outlet (30) a separable outlet connectiontube (50) having a downwards facing upper surface (55) a pivot joint defininga hinge axis between the top edge (32) and the outlet tube (50) a protrusion andrecess pair, one of the protrusion and the recess located on the tube (50) and theother on the first side edge of the housing (20) and a clip (54) and co-operatingsurface (42) pair, one of the clip and co-operating surface located on the tube(50) and the other on the second side edge (36) of the housing (20), wherein thedownwards facing upper surface (55) of the outlet connection tube (50) is positionableonto the top edge 32 adjacent the outlet (30) so as to form the pivot joint and whereby,as the tube (50) is pivoted downwards, the protrusion and recess pair engage eachother and the clip (54) engages with the co-operating surface (42) to retain thetube (50) to the outlet (30).
