PROBLEM TO BE SOLVED: To provide a vane part which can suppress the lowering of the quality of appearance even if a main body and a lid are joined to each other by ultrasonic fusion, and can suppress the lowering of rigidity.SOLUTION: A horizontal vane is a resin-made horizontal vane which is possessed by an air conditioner, and comprises a main body 20 and a lid 30. The lid 30 is joined to the main body 20 in a state that a hollow part 60 is interposed between the main body 20 and itself. A recess 50 which is formed of the lid 30, or the lid 30 and the body 20 is formed at an end part of the lid 30 side. The main body 20 and the lid 30 are joined to each other by ultrasonic fusion while an ultrasonic horn abuts on an internal face of the recess 50.SELECTED DRAWING: Figure 4
