These days most Macintosh Apps have a feature called Tabbed Windows. That includes the Finder App as well. Tabbed Windows puts every open window for an App in a Tabbed layout within one window. I don’t use this as much as I should. This article describes how to setup and use Tabbed Windows. If you have a lot of windows open in a specific App, Tabbed Windows can save you some screen real estate and is just more efficient.