| 摘要 |
PROBLEM TO BE SOLVED: To provide a housing case with which production of projections separately is not required, rack plates can be installed at optional positions and quality management and handling during storing is far more convenient than a conventional one. SOLUTION: Projections 5 projected to the inside in order to place plural rack plates 3 are formed by pressing on the same horizontal lines on the back plate 2a and the side plates 2b of a case 1. The upper surfaces of the projections 5 are sometimes formed to be flat.
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