The window slot 23, like the previous version 22, is carried out behind the walls of the house.

It is distinguished by the fact that it does not use large curls of the brackets. They are reduced in size.

This option can be used if the windows are literally next to each other, or you must adhere to strict stylistics, clarity, without changing the main forms.

The window hole has a narrowed and rounded form, so the best option would be to use such a window opening on the upper floors.