本帖最后由 移民电工 于 2010-12-21 22:15 编辑 2 i$ V4 H1 S( P* g % C5 w; X; _( ?6 y+ J+ R" rThis 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! V# q5 D# P9 w5 Q1 F( Q$ E0 O 5 a) h) B) o' `' j) r H# c+ NThese kinds of device need be cleaning and maintaining before winter season.