| 摘要 |
PROBLEM TO BE SOLVED: To realize the reform of the entrance door by providing an excellent door in both the appearance and quality without being affected by a measuring error or a distortion of the door opening. SOLUTION: At least one of the right and left frame members out of the four side frame members making the outer periphery of a sash door is made as a double-layer construction and made adjustable and movable in right and left directions. Also, in a certain case, at least the upper or lower frame member out of the four-side frame members is made adjustable or movable in a vertical direction. |
