How big is the bathroom window?

0.6m×0.9m to 0.9m× 1.4m bathroom window size is generally 0.6m× 0.9m *1.4m, and the ratio of window area to room floor area is 1: 8 or 1: 7, which is the standard of window size. In architecture, a window refers to a hole built in the wall or roof to let light or air into the room. As early as the Sui Dynasty in China, there were windows that could be opened and closed automatically in the Guanwen Hall of Weizicheng in Luoyang Palace.