5 f# E1 ^) q( ^# L5 j, F2 F( vThis 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! / \9 ^5 k( L, E/ b' Y, Q- [$ k. ^( W# a' }. ]$ `6 o
These kinds of device need be cleaning and maintaining before winter season.