| 摘要 |
PROBLEM TO BE SOLVED: To position shelf boards of two kinds of different depth with one kind of shelf frame. SOLUTION: Front and rear shelf frames 6 for positioning a shelf board 4 have laterally extending stepped bent parts 62 formed at both ends, and a plurality of rising parts 61 formed in suitable parts of the stepped bent parts 62. Horizontal extension parts 63 are arranged inward, and the placing positions are changed to allow the shelf boards 4 of different depth to be placed.
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