French doors are a type of patio doors that are hinged on the side and swing open and closed.
Of course, you are thinking why are they called French doors? Well, that’s because these types of doors originated in France, which makes sense. But there is more to its name. You might also hear french doors called “French windows”. Again, why is that? It’s because these doors began as large windows that were used to step out onto a balcony, and with time, these large windows became known as French doors. So, they’re basically windows that transformed into doors! Interesting, right?