Glass slide seal, can be fitted to the door with a glass door. The upper portion of the glass run channel comprising: a body provided with an inner side wall portion, and is formed to have a substantially U-shaped cross-section; a pair of sealing lip, the door glass to form a seal; a pair of engaging projections provided on the inner side wall portion on the inner surface, and a fixed member adapted to engage with engagement recesses; and a bent portion, disposed in two engaging protrusions on the inner side wall portion between. Thus, at the time of installation of the glass run channel, the bent portion is bent so as to protrude toward the inside of the vehicle, the engaging projection is inserted into the fixing member, and then, by releasing the bent state, the two engaging projections are fitted into the engagement recess.