A chair-rail molding divides wall horizontally, usually about three feet above the floor. Chair-rail was originally designed to prevent the tops of the chair backs from denting or marring the walls. For this reason chair-rail molding traditionally located about 30 to 33 inches above the floor and wrap around the perimeter of the room. Chair rail molding and frieze molding are horizontal wall moldings have been popular features of many architectural styles. This moldings have a very interesting origins and styles. Chair rail molding, also called dado rail, is installed about waist high. Chair rail molding originally was used to protect walls from chair backs. Today, chair rail molding is a common detail in traditional interiors. Considered decorative by today's standards, chair-rail molding adds a feeling of detail and charm to the walls and lends continuality to a room by unifying it Chair rail provides a focal point offering a beautiful decorating effect. Chair rail molding unifies various architectural details in the room, such as door and window trim, fireplace mantels etc. Chair rails often serve as a cap for wainscoting. Picture rail molding and frieze molding have a similar visual effect as a chair rail molding.