本帖最后由 移民电工 于 2010-12-21 22:15 编辑 6 [) H# m/ s! T , m7 M) x9 \5 _5 gThis 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! 6 p7 w# D2 A" _( k 9 a) O! [9 i2 z+ G- s# AThese kinds of device need be cleaning and maintaining before winter season.