Sectional sofas are a common type of seating found in living rooms and dens. Unlike a conventional sofa, sectionals are composed of multiple independent pieces that may be arranged in a number of different positions. This quality helps the sectional sofa to be a more versatile seating solution than the common three seater couch.

The exact composition of a sectional sofa will vary from one design to another. In some cases, sectional couches are essentially a two piece set of sofas that may be arranged to form a perfect ninety-degree angle.

This was a very popular structure during the middle of the 20th century, and continues to be a favorite for use in casual settings such as dens, home offices, or family rooms.