OPENING FRAME AND OPENING STRUCTURE

PROBLEM TO BE SOLVED: To simplify appearance, and to easily secure predetermined quality on the periphery of an opening when a projection is formed at only part of a small opening of an ALC plate in the longitudinal direction. SOLUTION: The exterior wall material 21 having the small opening is constituted of a part 21a adjacent to the opening and a part 21b adjacent to a non-opening part which are continuous with each other. The part 21a adjacent to the opening has a projection, and the part 21b adjacent to the non-opening part which is adjacent to the non-opening part does not have a projection. The opening frame 10 adjacent to the small opening is used for at least attaching a sash, and provided with an opening reinforcing member 11, a non-opening reinforcing member 12, and a connecting member 13. The opening reinforcing member 11 is provided along the part 21a adjacent to the opening, and the non-opening reinforcing member 12 is provided along the part 21b adjacent to the non-opening part. The connecting member 13 connects the opening reinforcing member 11 and the non-opening reinforcing member 12 by displacing them so that the opening frame 10 is provided along the small opening of the exterior wall material 21. COPYRIGHT: (C)2009,JPO&INPIT