! G9 H( B+ N6 I1 M& iThis 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 u- w6 X; J7 [( j4 y( w- F' w) ?" h3 ]" ~' | F
These kinds of device need be cleaning and maintaining before winter season.