Inward-opening windows refer to windows that open inwards. This design can be traced back to ancient Rome, where the Romans were the first to adopt this style, while outward-opening windows appeared in the Middle Ages.
The design principles of inward-opening windows are mainly based on the following two points:
1. Improved Security
Inward-opening windows can improve the security of a building. For example, if a window opens outwards, someone could climb into the building from the outside. Inward-opening windows prevent this from happening because the window cannot be opened from the outside.
2. Ease of Cleaning
Inward-opening windows also facilitate daily cleaning. Outward-opening windows require climbing to the outside to clean, while inward-opening windows can be easily cleaned simply by opening the window.
