No edge window / Window frame

You can find windows everywhere: your workplace, your house, buildings, and rest rooms.
You are bound to clean up places you belong. You have the right to enjoy a clean environment. So everyone does cleaning in various ways.
Sometimes you have to brush away dust and dirty things around window frames. But it is hard to perfectly clean up them by all means, unless you wash them with water. This frame rules out linear factors of the existing window frames. With the curved structure, it makes you feel more comfortable towards the window. Furthermore, there is a less chance of hurting children when they pinch their fingers in the frames .