本帖最后由 移民电工 于 2010-12-21 22:15 编辑 ' R( c! J4 F* ]
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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!( H/ E% ^0 P& h. Z4 C$ q" t: h8 ~+ M2 ^
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These kinds of device need be cleaning and maintaining before winter season.