本帖最后由 移民电工 于 2010-12-21 22:15 编辑 . M! W" r/ T8 ^ 2 I; \. ~) W: `: v) W( JThis 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! 2 R+ u% N1 n+ s' L% E 2 p. j* p& A' e! N+ ~! @These kinds of device need be cleaning and maintaining before winter season.