| 摘要 |
Sheet metal multiple stepped tile panels are joined to similar roof panels in interlocking relationship. On one edge running the length of the panel is a single female groove (44) while the opposite edge of the panel has a plurality of male members (431, 432, 433) which can engage the single groove of a similarly shaped panel. The stepped (41, 42, 43; 411, 412, 413; 421, 422, 423) panel is quite long compared to its width. Hidden screws in a securing flange join the panel to a roof.
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