1. Subsidize the protective film → align the center line on the frame → install the fixing piece → align the center line in the hole → adjust and temporarily fix the frame into the hole → connect with the wall → fill the elastic material → clean and caulk the opening surface → install the fan and glass hardware …

First of all, profiles should be selected. Considering that most houses have large window areas (such as enclosed balconies) and many high-rise buildings, the wall thickness of profiles should be greater than 2.5mm. The inner cavity is of three cavity structure, with closed drainage cavity, isolation cavity and reinforcement cavity. Only in this way can the window users be guaranteed …