| 摘要 |
To immensely simplify the work and also to remarkably reduce time and cost for the work, a main board composed of synthetic panels kept in parallel, separated opposing each other, and a windowpane at least more than one which is arranged, matched with the window opening part, inserted through the separate clearance are provided. And also a length direction groove is equipped herein containing areas of the main boards, then a finishing board is included which forms at least a part of the door rim, combining the main boards by way of fitting along the outer periphery of the above main board.
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