| 摘要 |
PROBLEM TO BE SOLVED: To provide a door warp countermeasure member, and a door warp preventive structure capable of preventing opening-closing failure of a door plate by restraining warping deformation of the door plate. SOLUTION: A porch door 10 comprises the door plate 11 openable to the outdoor side, the door warp countermeasure member 18 arranged in the vicinity of a base end side area B of the door plate 11 on the indoor side being the opposite side of the opening direction of the door plate 11, and a receiving plate 19 arranged between this door warp countermeasure member 18 and a door surface 11A positioned on the indoor side. The door warp countermeasure member 18 comprises a roller 21 relatively arranged on the door surface 11A, and a support 22 for rotatably supporting this roller 21.
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