| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a modification sash that is attractive after being constructed, and easy to construct.SOLUTION: There is provided a modification sash 1 including new frames 120, 320, and 420 fitted to cover inner peripheral surfaces of existing frames 110, 310, and 410 fitted to an opening part of a building, and casing members 160, 360, and 460 fitted to cover indoor sides of the existing frames and new frames. The casing members have first casing members 161, 361, and 461 fitted to skeleton sides of the building and second casing members 162, 362, and 462 fitted to new-frame sides, and the first casing members and second casing members are fitted to each other, and made adjustable in fitting depth.</p> |
