Abstract: An indoor unit for an air-conditioning apparatus has an attachment portion has a plate portion that is in contact with one face of a first projection portion in an axial direction and is larger in width than a first shaft opening port, a shaft portion that extends from the plate portion and is inserted into the first shaft opening port, a support opening port, and a second shaft opening port, and an engagement claw portion that is engaged with an other face of the first projection portion that is opposite to the one face, and a second projection portion has a notch that is cut along a direction in which the shaft portion extends and through which the shaft portion is exposed.