| 摘要 |
PROBLEM TO BE SOLVED: To shorten an installation term and a dismantling term. SOLUTION: Shelf structures 2 and 4 and their assembly structure 200 are provided with a rectangular floor frame assembly 6, and four supports 8 disposed in four corners in the back side of the floor frame assembly 6. The floor frame assembly 6 comprises a pair of floor frames 10 and the respective floor frames 10 are mutually separably connected. In a state where the respective supports 8 are positioned in a folding position, the length of each of the supports 8 is regulated so that each tip does not exceed the range of the whole width of the corresponding floor frame 10. Each of the supports 8 is positioned in a support position and then the floor frame assembly 6 is mounted on a mounting face G.
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