Number of Bulbs:
Wall sconces or wall lighting are light fixtures that are mounted to the wall. They fulfill many lighting functions such as: task, wall-washing, ambient or even just function as decorate pieces.
Picking the right wall sconce:
In order to pick a wall sconce, we must first consider its use. Is it a decorative piece meant to provide ambient lighting? Or is it used to complete work in an office?
Decorative pieces tends to have lower lumens (light output) and are up-facing. Up-facing sconces are great at highlighting walls and ceilings while providing excellent ambient light. They also usually come in pairs.
Task lighting sconces are generally downward facing, and have a lumen output greater than 800. They usually come in singles and are placed over desks or kitchen sinks.