A French door is a type of style that has 2 regular sized doors built side by side that will form 1 big beautiful entrance door. In French doors you have the option of having one door fixed (does not open) or both doors that open. The only difference in these 2 options is the cost, it would typically be less expensive if one door is fixed rather than having them both open. In terms of aesthetics, either option is great, they both look outstanding. Also, just like any standard entrance door we provide, a French door can come in steel or fiberglass. Steel doors are more cost efficient, however fiberglass doors are more energy efficient.