本帖最后由 移民电工 于 2010-12-21 22:15 编辑 . Y/ w# d' q8 C0 U, U- ]
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This is a horizontal furnurs mount on the top of building and intake air form outsid of building, I think you can not fix it by yourself! + W8 e; ? Y- l4 K$ j 0 N( S# g9 A$ I5 S. _% ~These kinds of device need be cleaning and maintaining before winter season.