Electrical boxes enclose wire connections for applications such as a light switch, electrical outlet or light fixture. Specific boxes are designed for use indoors, outdoors, for attaching to the outside of walls, for behind walls and other applications. Certain electrical boxes are up to "code" for certain applications, and must meet specific codes for specific areas and applications. Electrical boxes come in a variety of shapes and sizes, materials, and overall application uses. Get the right electrical box for your job!