| 摘要 |
PURPOSE: A duct assembly is provided to prevent the movement of the air by minimizing the construction by integrating a combining member with a filtering member. CONSTITUTION: A duct assembly comprises a duct member and a filter section(130). The air flows in the duct member. The filter unit has one or more filtering member(135). The cross-sectional area of the filter member is varied according to an air flow path of the duct member. The filter unit comprises a frame(131) combined in the duct member. A plurality of filter members is arranged inside a frame at a regular interval.
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