本帖最后由 移民电工 于 2010-12-21 22:15 编辑 : d2 a6 X' l" A/ i5 o( }9 q V' w" z/ `- W' @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!/ U) |* E) Q7 M; n: [
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These kinds of device need be cleaning and maintaining before winter season.