The present invention is a transparent plate to be transparent or semi-transparent material of the plate member on the door structure; Inserted in the altar directly on the upper and lower side edge of the transparent plate, the upper and lower crosspiece that are arranged in upper and lower sides of the transparent plate; Wherein coupled to each of the upper and lower left and right ends of the bar, at the same time, interconnecting the upper and lower bar, a pair of vertical plate closing the upper and lower bar respectively, the left and right end; By being coupled to each projecting outwardly left and right end of the upper bar, a pair of guide shaft is horizontally guided along the upper door frame; And by being respectively joined to the outward end left and right of the lower bar, a pair of Call Blocking bundle to move from side to side along the door frame lower side; made including, the vertical plates, the upper portion to the upper bar side end, the lower portion At the same time each of which is coupled to the lower side end bar, the core body in the middle portion to cover the sides edges of the transparent plate; And along the lateral side edge of the core body is bent so that it is flush with the transparent plate, the cover body along said transparent plate and the upper and lower bar respectively, the lateral side edges to cover the transparent plate and the upper side and the surface of the lower bar; the is made including, the consumer's preference for the above design of the narrow width of the vertical elements of the door by the door of the preferred configuration is largely able to satisfy.