| 摘要 |
PROBLEM TO BE SOLVED: To provide a window frame structure having more excellent workability and beauty. SOLUTION: In the window frame structure in which an apron section drooped to a lower section is formed on the outdoor side of a lower window frame 8 constituting a part of a window frame in a window opening section 3 and a lower frame 34 is installed to the apron section, an upper hook section forming an upper groove is formed at the upper end of the apron section, the lower frame has a base end section 34a fitted to the upper groove and an apron section continuing to the base end section and a bracing section 34c extending from the underside of the apron section, and a fitting section is formed to the external surface of the bracing section.
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