| 摘要 |
PROBLEM TO BE SOLVED: To facilitate fractional work after the replacement or disposal of the member surrounding a work space in a draft chamber. SOLUTION: For example, a side panel 1 is formed so as to have a double- layer structure of a main body 33 and an interior material 34 and the interior material 34 is pressed and fixed to the main body 33 by a screw clamp type press member 38. The press member 38 and a screw 39 are protected by a cover 42 made of a synthetic resin.
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