An object of the present disclosure is to generate a click feeling, and thus improve workability, in attaching a trim strip member to a sealing member, and to increase a retaining force retaining the trim strip member to the sealing member after the attachment, without an increase in the number of components and the number of assembling steps. A trim strip member 40 includes an upper engagement portion 42 and a lower engagement portion 43 at an upper portion and a lower portion of the trim strip member, respectively. A side of a sealing member body 21 facing outside of a passenger compartment includes a portion made of a rigid material that is harder than an elastic material, and is provided with an upper protrusion 25a and a lower protrusion 25b spaced apart from each other in a vertical direction, the upper protrusion 25a and the lower protrusion 25b respectively engaging with the upper engagement portion 42 and the lower engagement portion 43 of the trim strip member 40.