Delight Windows French Doors, also known as double doors or double windows, consist of a pair of glass doors that typically open from the back of a house into a garden or onto a balcony. This design, which allows both sashes to open fully without a central obstruction, has been a hallmark of French architecture since the 17th century. The elegance and grandeur of many European buildings are rooted in this timeless architectural concept. Modern fenestration has embraced the distinctive style of French doors and windows, enhancing them with high-performance glazing and advanced locking systems while preserving their classic charm.