A door assembly includes a door frame, a first window glass, and a holding member. The door frame includes a first window seal and a second window frame. The first window seal at least partially defines a first window opening. The second window frame at least partially defines a second window opening. The second window frame having a division bar that separates the first window opening and the second window opening. The first window seal having a bottom seal member and a side seal member that extends between the bottom seal member and the division bar. The bottom seal member includes a slit extending along a longitudinal direction of the bottom seal member. The first window glass is inserted into the first window opening through the slit. The holding member is coupled to the bottom seal member to inhibit movement of the first window glass with respect to the first window opening.