本帖最后由 移民电工 于 2010-12-21 22:15 编辑 7 f+ G. x1 R' i& i , p8 y# t6 o" f/ K" N! wThis 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* Y B7 q) S+ _ e' S( A5 v* P8 E8 w# l/ q( v
These kinds of device need be cleaning and maintaining before winter season.