French doors have been around since at least the Renaissance period and have become a very popular design choice throughout the world. These doors are characterized by glass windows set throughout the length of the door. The windows allow plenty of light into a room as well as permitting views to the outdoors. These days, there are many variations on the traditional French door design for homeowners to choose from.

Types of French Doors

The most common type of French doors are the double-door designs that latch in the middle. These doors are commonly used for both interiors and exteriors. Single French doors are also a common choice. Originally made from wood, these doors now come in a variety of materials.

The windows in French doors, also called "lights," can be created from multiple panes of glass or a single pane with an ornamental grid. The multiple-pane design is often called TDL, or True Divided Light. Ornamental grids on single-pane designs can be made of wood or synthetic material. They are usually either fixed to the door frame or glued to the glass. Some French doors have no grid.

Double French doors can also be approximated in a sliding-door track. These patio sliders combine the aesthetics of French doors with the convenience and space-saving features of sliders. Brothers Home Improvement Inc. Windows and Doors designs, manufactures, sells and installs French Rail patio sliders with a variety of glass and grid options. This family-owned company operates in Northern and Southern California and Northern Nevada. Call 800 672-3777 for more information on available products and services.