To provide an entrance having release atmosphere by a method wherein an opening part abolishing a lintel, a sill, and a stopper column in a way that the floor surface, the ceiling surface, and the wall surface of the entrance of a room are continued to the floor surface, the ceiling surface, and the wall surface, respectively, of an external part.

A fittings structure is provided with an external space 2, communicating with a room 1, and a sliding door 3 to partition the room 1 and the external space 2 from each other. A floor surface 5, a ceiling surface 6, and a wall surface 7 of an entrance 4 of the room 1 are continued to a floor surface 5, a ceiling surface 6, and a wall surface 7, respectively, of an external space, and a flat state is produced. Thereby, a lintel, a sill, and a stopper column are abolished, and a state that a large opening throughout a whole is formed. Thus, a sliding door 3 forms a one single sliding door and is slid through a wall interior 8 and the entrance 4. This constitution brings the entrance 4 of the room into a release and neat atmosphere state, and further forms a Japanese-Foreign style combination type entrance.