What do you mean by inner window?

The inner window is an inner window, and the outer window is a window close to the outer wall. Usually, during the renovation, some rooms in the hotel will be inside the building. There are no windows close to the outer wall, and air circulation is needed to improve the indoor air, so that people will not feel depressed and stuffy when they live inside. This kind of inner window is to increase safety, avoid blowing away the window pieces during typhoon, and facilitate sanitation and cleaning.

The inner window is an inner window, and the outer window is a window close to the outer wall. Usually, during the renovation, some rooms in the hotel will be inside the building. There are no windows close to the outer wall, and air circulation is needed to improve the indoor air, so that people will not feel depressed and stuffy when they live inside. This kind of inner window is to increase safety, avoid blowing away the window pieces during typhoon, and facilitate sanitation and cleaning.