| 摘要 |
PROBLEM TO BE SOLVED: To constitute a guide rail, whose substrate frame part is fitted with a guide part, in such a manner as to eliminate the play of the guide part relative to the substrate frame part and prevent slipping-off. SOLUTION: An outside mounting piece 3c outside in the frontage width direction of the substrate frame part 3 is formed with a slipping-off stopping piece 3e protruded inward in the frontage width direction and inclined toward an indoor side, and the guide part 4 is formed with a slipping-off stopping recessed part 4e, whereinto the piece 3e is fitted, in such a condition as to have the groove width W of the piece 4e rather than the thickness T of the piece 3e.
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