A sidelight or sidelite in a building is a window, usually with a vertical emphasis, that flanks a door or a larger window.[1] Sidelights are narrow, usually stationary and found immediately adjacent to doorways.[2][3] While most commonly found as supporting elements emphasizing the importance of a primary entrance, sidelights may be employed at any interior or exterior door where a visual emphasis is desired, or where additional light or visibility is needed.