Glazed device intended to be mounted on an inner door shell to form a motor vehicle door or on a bodywork element, comprising a glazed fixed part and a mobile glazed panel that can slide relative to said fixed part along a substantially vertical axis, and can selectively at least partially cover or uncover an opening in said fixed part, said mobile panel being guided along rails supported by said fixed part and said opening being defined by an upper edge and two vertical side edges,
- characterized in that said rails are secured to said fixed part along said side edges of said opening by a main bead of glue,
- and in that a frame, which extends at least on said side edges and said upper edge of said opening, is secured to said rails for the side edges of said frame and glued to said fixed part by means of said main bead of glue, for the upper edge of said frame.