END CAP ASSEMBLY

A sunshade structure is disclosed. The sunshade structure includes a sunshade; a guide rail; a sunshade stopper configured to stop a movement of the sunshade, the sunshade stopper including a first side wall and a second side wall; and an end cap configured to cap an end of the guide rail, the end cap including a bottom plate, a first sunshade stopper retention wall extending vertically from the bottom plate and configured to extend around the first side wall a second sunshade stopper retention wall extending vertically from the bottom plate and configured to extend around a junction of the first side wall and the second side wall a third sunshade stopper retention wall extending vertically from the bottom plate and configured to extend around the second side wall; and a fourth wall extending vertically from the bottom plate and configured to extend from an end of the second side wall to the end of the guide rail.